diff --git a/docs/html/reference/_book.yaml b/docs/html/reference/_book.yaml
deleted file mode 100644
index b902a61a650160639061d997385ddc1501830849..0000000000000000000000000000000000000000
--- a/docs/html/reference/_book.yaml
+++ /dev/null
@@ -1,853 +0,0 @@
-reference:
-- title: Class Index
-  path: /reference/classes.html
-  status_text: no-toggle
-- title: Package Index
-  path: /reference/packages.html
-  status_text: no-toggle
-- title: android
-  path: /reference/android/package-summary.html
-  status_text: apilevel-1
-- title: android.accessibilityservice
-  path: /reference/android/accessibilityservice/package-summary.html
-  status_text: apilevel-4
-- title: android.accounts
-  path: /reference/android/accounts/package-summary.html
-  status_text: apilevel-5
-- title: android.animation
-  path: /reference/android/animation/package-summary.html
-  status_text: apilevel-11
-- title: android.annotation
-  path: /reference/android/annotation/package-summary.html
-  status_text: apilevel-16
-- title: android.app
-  path: /reference/android/app/package-summary.html
-  status_text: apilevel-1
-- title: android.app.admin
-  path: /reference/android/app/admin/package-summary.html
-  status_text: apilevel-8
-- title: android.app.assist
-  path: /reference/android/app/assist/package-summary.html
-  status_text: apilevel-23
-- title: android.app.backup
-  path: /reference/android/app/backup/package-summary.html
-  status_text: apilevel-8
-- title: android.app.job
-  path: /reference/android/app/job/package-summary.html
-  status_text: apilevel-21
-- title: android.app.usage
-  path: /reference/android/app/usage/package-summary.html
-  status_text: apilevel-21
-- title: android.appwidget
-  path: /reference/android/appwidget/package-summary.html
-  status_text: apilevel-3
-- title: android.bluetooth
-  path: /reference/android/bluetooth/package-summary.html
-  status_text: apilevel-5
-- title: android.bluetooth.le
-  path: /reference/android/bluetooth/le/package-summary.html
-  status_text: apilevel-21
-- title: android.companion
-  path: /reference/android/companion/package-summary.html
-  status_text: apilevel-O
-- title: android.content
-  path: /reference/android/content/package-summary.html
-  status_text: apilevel-1
-- title: android.content.pm
-  path: /reference/android/content/pm/package-summary.html
-  status_text: apilevel-1
-- title: android.content.res
-  path: /reference/android/content/res/package-summary.html
-  status_text: apilevel-1
-- title: android.database
-  path: /reference/android/database/package-summary.html
-  status_text: apilevel-1
-- title: android.database.sqlite
-  path: /reference/android/database/sqlite/package-summary.html
-  status_text: apilevel-1
-- title: android.databinding
-  path: /reference/android/databinding/package-summary.html
-  status_text: apilevel-
-- title: android.drm
-  path: /reference/android/drm/package-summary.html
-  status_text: apilevel-11
-- title: android.gesture
-  path: /reference/android/gesture/package-summary.html
-  status_text: apilevel-4
-- title: android.graphics
-  path: /reference/android/graphics/package-summary.html
-  status_text: apilevel-1
-- title: android.graphics.drawable
-  path: /reference/android/graphics/drawable/package-summary.html
-  status_text: apilevel-1
-- title: android.graphics.drawable.shapes
-  path: /reference/android/graphics/drawable/shapes/package-summary.html
-  status_text: apilevel-1
-- title: android.graphics.fonts
-  path: /reference/android/graphics/fonts/package-summary.html
-  status_text: apilevel-O
-- title: android.graphics.pdf
-  path: /reference/android/graphics/pdf/package-summary.html
-  status_text: apilevel-19
-- title: android.hardware
-  path: /reference/android/hardware/package-summary.html
-  status_text: apilevel-1
-- title: android.hardware.camera2
-  path: /reference/android/hardware/camera2/package-summary.html
-  status_text: apilevel-21
-- title: android.hardware.camera2.params
-  path: /reference/android/hardware/camera2/params/package-summary.html
-  status_text: apilevel-21
-- title: android.hardware.display
-  path: /reference/android/hardware/display/package-summary.html
-  status_text: apilevel-17
-- title: android.hardware.fingerprint
-  path: /reference/android/hardware/fingerprint/package-summary.html
-  status_text: apilevel-23
-- title: android.hardware.input
-  path: /reference/android/hardware/input/package-summary.html
-  status_text: apilevel-16
-- title: android.hardware.usb
-  path: /reference/android/hardware/usb/package-summary.html
-  status_text: apilevel-12
-- title: android.icu.lang
-  path: /reference/android/icu/lang/package-summary.html
-  status_text: apilevel-24
-- title: android.icu.math
-  path: /reference/android/icu/math/package-summary.html
-  status_text: apilevel-24
-- title: android.icu.text
-  path: /reference/android/icu/text/package-summary.html
-  status_text: apilevel-24
-- title: android.icu.util
-  path: /reference/android/icu/util/package-summary.html
-  status_text: apilevel-24
-- title: android.inputmethodservice
-  path: /reference/android/inputmethodservice/package-summary.html
-  status_text: apilevel-3
-- title: android.location
-  path: /reference/android/location/package-summary.html
-  status_text: apilevel-1
-- title: android.media
-  path: /reference/android/media/package-summary.html
-  status_text: apilevel-1
-- title: android.media.audiofx
-  path: /reference/android/media/audiofx/package-summary.html
-  status_text: apilevel-9
-- title: android.media.browse
-  path: /reference/android/media/browse/package-summary.html
-  status_text: apilevel-21
-- title: android.media.effect
-  path: /reference/android/media/effect/package-summary.html
-  status_text: apilevel-14
-- title: android.media.midi
-  path: /reference/android/media/midi/package-summary.html
-  status_text: apilevel-23
-- title: android.media.projection
-  path: /reference/android/media/projection/package-summary.html
-  status_text: apilevel-21
-- title: android.media.session
-  path: /reference/android/media/session/package-summary.html
-  status_text: apilevel-21
-- title: android.media.tv
-  path: /reference/android/media/tv/package-summary.html
-  status_text: apilevel-21
-- title: android.mtp
-  path: /reference/android/mtp/package-summary.html
-  status_text: apilevel-12
-- title: android.net
-  path: /reference/android/net/package-summary.html
-  status_text: apilevel-1
-- title: android.net.http
-  path: /reference/android/net/http/package-summary.html
-  status_text: apilevel-1
-- title: android.net.nsd
-  path: /reference/android/net/nsd/package-summary.html
-  status_text: apilevel-16
-- title: android.net.rtp
-  path: /reference/android/net/rtp/package-summary.html
-  status_text: apilevel-12
-- title: android.net.sip
-  path: /reference/android/net/sip/package-summary.html
-  status_text: apilevel-9
-- title: android.net.wifi
-  path: /reference/android/net/wifi/package-summary.html
-  status_text: apilevel-1
-- title: android.net.wifi.aware
-  path: /reference/android/net/wifi/aware/package-summary.html
-  status_text: apilevel-O
-- title: android.net.wifi.hotspot2
-  path: /reference/android/net/wifi/hotspot2/package-summary.html
-  status_text: apilevel-O
-- title: android.net.wifi.hotspot2.omadm
-  path: /reference/android/net/wifi/hotspot2/omadm/package-summary.html
-  status_text: apilevel-O
-- title: android.net.wifi.hotspot2.pps
-  path: /reference/android/net/wifi/hotspot2/pps/package-summary.html
-  status_text: apilevel-O
-- title: android.net.wifi.p2p
-  path: /reference/android/net/wifi/p2p/package-summary.html
-  status_text: apilevel-14
-- title: android.net.wifi.p2p.nsd
-  path: /reference/android/net/wifi/p2p/nsd/package-summary.html
-  status_text: apilevel-16
-- title: android.nfc
-  path: /reference/android/nfc/package-summary.html
-  status_text: apilevel-9
-- title: android.nfc.cardemulation
-  path: /reference/android/nfc/cardemulation/package-summary.html
-  status_text: apilevel-19
-- title: android.nfc.tech
-  path: /reference/android/nfc/tech/package-summary.html
-  status_text: apilevel-10
-- title: android.opengl
-  path: /reference/android/opengl/package-summary.html
-  status_text: apilevel-1
-- title: android.os
-  path: /reference/android/os/package-summary.html
-  status_text: apilevel-1
-- title: android.os.health
-  path: /reference/android/os/health/package-summary.html
-  status_text: apilevel-24
-- title: android.os.storage
-  path: /reference/android/os/storage/package-summary.html
-  status_text: apilevel-9
-- title: android.preference
-  path: /reference/android/preference/package-summary.html
-  status_text: apilevel-1
-- title: android.print
-  path: /reference/android/print/package-summary.html
-  status_text: apilevel-19
-- title: android.print.pdf
-  path: /reference/android/print/pdf/package-summary.html
-  status_text: apilevel-19
-- title: android.printservice
-  path: /reference/android/printservice/package-summary.html
-  status_text: apilevel-19
-- title: android.provider
-  path: /reference/android/provider/package-summary.html
-  status_text: apilevel-1
-- title: android.renderscript
-  path: /reference/android/renderscript/package-summary.html
-  status_text: apilevel-11
-- title: android.sax
-  path: /reference/android/sax/package-summary.html
-  status_text: apilevel-1
-- title: android.security
-  path: /reference/android/security/package-summary.html
-  status_text: apilevel-14
-- title: android.security.keystore
-  path: /reference/android/security/keystore/package-summary.html
-  status_text: apilevel-23
-- title: android.service.autofill
-  path: /reference/android/service/autofill/package-summary.html
-  status_text: apilevel-O
-- title: android.service.carrier
-  path: /reference/android/service/carrier/package-summary.html
-  status_text: apilevel-22
-- title: android.service.chooser
-  path: /reference/android/service/chooser/package-summary.html
-  status_text: apilevel-23
-- title: android.service.dreams
-  path: /reference/android/service/dreams/package-summary.html
-  status_text: apilevel-17
-- title: android.service.media
-  path: /reference/android/service/media/package-summary.html
-  status_text: apilevel-21
-- title: android.service.notification
-  path: /reference/android/service/notification/package-summary.html
-  status_text: apilevel-18
-- title: android.service.quicksettings
-  path: /reference/android/service/quicksettings/package-summary.html
-  status_text: apilevel-24
-- title: android.service.restrictions
-  path: /reference/android/service/restrictions/package-summary.html
-  status_text: apilevel-21
-- title: android.service.textservice
-  path: /reference/android/service/textservice/package-summary.html
-  status_text: apilevel-14
-- title: android.service.voice
-  path: /reference/android/service/voice/package-summary.html
-  status_text: apilevel-21
-- title: android.service.vr
-  path: /reference/android/service/vr/package-summary.html
-  status_text: apilevel-24
-- title: android.service.wallpaper
-  path: /reference/android/service/wallpaper/package-summary.html
-  status_text: apilevel-7
-- title: android.speech
-  path: /reference/android/speech/package-summary.html
-  status_text: apilevel-3
-- title: android.speech.tts
-  path: /reference/android/speech/tts/package-summary.html
-  status_text: apilevel-4
-- title: android.support.animation
-  path: /reference/android/support/animation/package-summary.html
-  status_text: apilevel-25.3.0
-- title: android.support.annotation
-  path: /reference/android/support/annotation/package-summary.html
-  status_text: apilevel-
-- title: android.support.app.recommendation
-  path: /reference/android/support/app/recommendation/package-summary.html
-  status_text: apilevel-23.0.0
-- title: android.support.compat
-  path: /reference/android/support/compat/package-summary.html
-  status_text: apilevel-
-- title: android.support.coreui
-  path: /reference/android/support/coreui/package-summary.html
-  status_text: apilevel-
-- title: android.support.coreutils
-  path: /reference/android/support/coreutils/package-summary.html
-  status_text: apilevel-
-- title: android.support.customtabs
-  path: /reference/android/support/customtabs/package-summary.html
-  status_text: apilevel-23.0.0
-- title: android.support.design
-  path: /reference/android/support/design/package-summary.html
-  status_text: apilevel-
-- title: android.support.design.widget
-  path: /reference/android/support/design/widget/package-summary.html
-  status_text: apilevel-22.2.0
-- title: android.support.dynamicanimation
-  path: /reference/android/support/dynamicanimation/package-summary.html
-  status_text: apilevel-
-- title: android.support.exifinterface
-  path: /reference/android/support/exifinterface/package-summary.html
-  status_text: apilevel-
-- title: android.support.fragment
-  path: /reference/android/support/fragment/package-summary.html
-  status_text: apilevel-
-- title: android.support.graphics.drawable
-  path: /reference/android/support/graphics/drawable/package-summary.html
-  status_text: apilevel-23.2.0
-- title: android.support.graphics.drawable.animated
-  path: /reference/android/support/graphics/drawable/animated/package-summary.html
-  status_text: apilevel-
-- title: android.support.media
-  path: /reference/android/support/media/package-summary.html
-  status_text: apilevel-25.1.0
-- title: android.support.media.instantvideo
-  path: /reference/android/support/media/instantvideo/package-summary.html
-  status_text: apilevel-
-- title: android.support.media.instantvideo.preload
-  path: /reference/android/support/media/instantvideo/preload/package-summary.html
-  status_text: apilevel-26.0.0-alpha1
-- title: android.support.media.instantvideo.widget
-  path: /reference/android/support/media/instantvideo/widget/package-summary.html
-  status_text: apilevel-26.0.0-alpha1
-- title: android.support.media.tv
-  path: /reference/android/support/media/tv/package-summary.html
-  status_text: apilevel-26.0.0-alpha1
-- title: android.support.mediacompat
-  path: /reference/android/support/mediacompat/package-summary.html
-  status_text: apilevel-
-- title: android.support.multidex
-  path: /reference/android/support/multidex/package-summary.html
-  status_text: apilevel-
-- title: android.support.percent
-  path: /reference/android/support/percent/package-summary.html
-  status_text: apilevel-23.0.0
-- title: android.support.recommendation
-  path: /reference/android/support/recommendation/package-summary.html
-  status_text: apilevel-
-- title: android.support.transition
-  path: /reference/android/support/transition/package-summary.html
-  status_text: apilevel-24.2.0
-- title: android.support.v13
-  path: /reference/android/support/v13/package-summary.html
-  status_text: apilevel-
-- title: android.support.v13.app
-  path: /reference/android/support/v13/app/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v13.view
-  path: /reference/android/support/v13/view/package-summary.html
-  status_text: apilevel-24.0.0
-- title: android.support.v13.view.inputmethod
-  path: /reference/android/support/v13/view/inputmethod/package-summary.html
-  status_text: apilevel-25.0.0
-- title: android.support.v14.preference
-  path: /reference/android/support/v14/preference/package-summary.html
-  status_text: apilevel-23.0.0
-- title: android.support.v17.leanback
-  path: /reference/android/support/v17/leanback/package-summary.html
-  status_text: apilevel-
-- title: android.support.v17.leanback.app
-  path: /reference/android/support/v17/leanback/app/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v17.leanback.database
-  path: /reference/android/support/v17/leanback/database/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v17.leanback.graphics
-  path: /reference/android/support/v17/leanback/graphics/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v17.leanback.media
-  path: /reference/android/support/v17/leanback/media/package-summary.html
-  status_text: apilevel-25.1.0
-- title: android.support.v17.leanback.system
-  path: /reference/android/support/v17/leanback/system/package-summary.html
-  status_text: apilevel-22.2.1
-- title: android.support.v17.leanback.widget
-  path: /reference/android/support/v17/leanback/widget/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v17.leanback.widget.picker
-  path: /reference/android/support/v17/leanback/widget/picker/package-summary.html
-  status_text: apilevel-23.2.0
-- title: android.support.v17.preference
-  path: /reference/android/support/v17/preference/package-summary.html
-  status_text: apilevel-23.0.0
-- title: android.support.v4
-  path: /reference/android/support/v4/package-summary.html
-  status_text: apilevel-
-- title: android.support.v4.accessibilityservice
-  path: /reference/android/support/v4/accessibilityservice/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.app
-  path: /reference/android/support/v4/app/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.content
-  path: /reference/android/support/v4/content/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.content.pm
-  path: /reference/android/support/v4/content/pm/package-summary.html
-  status_text: apilevel-22.2.0
-- title: android.support.v4.content.res
-  path: /reference/android/support/v4/content/res/package-summary.html
-  status_text: apilevel-22.2.0
-- title: android.support.v4.database
-  path: /reference/android/support/v4/database/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.graphics
-  path: /reference/android/support/v4/graphics/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.graphics.drawable
-  path: /reference/android/support/v4/graphics/drawable/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.hardware.display
-  path: /reference/android/support/v4/hardware/display/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.hardware.fingerprint
-  path: /reference/android/support/v4/hardware/fingerprint/package-summary.html
-  status_text: apilevel-23.0.0
-- title: android.support.v4.math
-  path: /reference/android/support/v4/math/package-summary.html
-  status_text: apilevel-26.0.0-alpha1
-- title: android.support.v4.media
-  path: /reference/android/support/v4/media/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.media.session
-  path: /reference/android/support/v4/media/session/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.net
-  path: /reference/android/support/v4/net/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.os
-  path: /reference/android/support/v4/os/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.print
-  path: /reference/android/support/v4/print/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.provider
-  path: /reference/android/support/v4/provider/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.text
-  path: /reference/android/support/v4/text/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.text.util
-  path: /reference/android/support/v4/text/util/package-summary.html
-  status_text: apilevel-24.2.0
-- title: android.support.v4.util
-  path: /reference/android/support/v4/util/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.view
-  path: /reference/android/support/v4/view/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.view.accessibility
-  path: /reference/android/support/v4/view/accessibility/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v4.view.animation
-  path: /reference/android/support/v4/view/animation/package-summary.html
-  status_text: apilevel-22.1.0
-- title: android.support.v4.widget
-  path: /reference/android/support/v4/widget/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v7.app
-  path: /reference/android/support/v7/app/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v7.appcompat
-  path: /reference/android/support/v7/appcompat/package-summary.html
-  status_text: apilevel-22.2.0
-- title: android.support.v7.cardview
-  path: /reference/android/support/v7/cardview/package-summary.html
-  status_text: apilevel-
-- title: android.support.v7.content.res
-  path: /reference/android/support/v7/content/res/package-summary.html
-  status_text: apilevel-24.0.0
-- title: android.support.v7.graphics
-  path: /reference/android/support/v7/graphics/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v7.graphics.drawable
-  path: /reference/android/support/v7/graphics/drawable/package-summary.html
-  status_text: apilevel-23.0.0
-- title: android.support.v7.gridlayout
-  path: /reference/android/support/v7/gridlayout/package-summary.html
-  status_text: apilevel-
-- title: android.support.v7.media
-  path: /reference/android/support/v7/media/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v7.mediarouter
-  path: /reference/android/support/v7/mediarouter/package-summary.html
-  status_text: apilevel-
-- title: android.support.v7.palette
-  path: /reference/android/support/v7/palette/package-summary.html
-  status_text: apilevel-
-- title: android.support.v7.preference
-  path: /reference/android/support/v7/preference/package-summary.html
-  status_text: apilevel-23.0.0
-- title: android.support.v7.recyclerview
-  path: /reference/android/support/v7/recyclerview/package-summary.html
-  status_text: apilevel-22.2.0
-- title: android.support.v7.util
-  path: /reference/android/support/v7/util/package-summary.html
-  status_text: apilevel-22.1.0
-- title: android.support.v7.view
-  path: /reference/android/support/v7/view/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v7.widget
-  path: /reference/android/support/v7/widget/package-summary.html
-  status_text: apilevel-22.0.0
-- title: android.support.v7.widget.helper
-  path: /reference/android/support/v7/widget/helper/package-summary.html
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-- title: java.util.concurrent
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-- title: java.util.concurrent.locks
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-- title: java.util.function
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-- title: java.util.jar
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-- title: javax.xml.transform
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-- title: javax.xml.transform.dom
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-- title: javax.xml.transform.sax
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-- title: javax.xml.validation
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-- title: javax.xml.xpath
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-- title: org.apache.http.conn
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-- title: org.apache.http.conn.scheme
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-- title: org.apache.http.conn.ssl
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-- title: org.apache.http.params
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-- title: org.json
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-- title: org.w3c.dom
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-- title: org.w3c.dom.ls
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-- title: org.xml.sax
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-- title: org.xml.sax.ext
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-- title: org.xml.sax.helpers
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-- title: org.xmlpull.v1
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-- title: org.xmlpull.v1.sax2
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diff --git a/docs/html/reference/_project.yaml b/docs/html/reference/_project.yaml
deleted file mode 100644
index e5c26e7fdd8fd35a4ac1946a0d5246cda38fc2f2..0000000000000000000000000000000000000000
--- a/docs/html/reference/_project.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-name: "Reference"
-home_url: /reference/
-description: "API Reference packages and classes."
-content_license: cc3-apache2
-buganizer_id: 30209417
-parent_project_metadata_path: /develop/_project.yaml