onclite: Remove obsolete dex settings

This block is completely redundant because..
- WITH_DEXPREOPT := true is the default
- WITH_DEXPREOPT_PIC is never read
- DEX_PREOPT_DEFAULT := nostripping has no effect when the
  BOARD_USES_SYSTEM_OTHER_ODEX flag is set to true
- WITH_DEXPREOPT_BOOT_IMG_AND_SYSTEM_SERVER_ONLY is set
  in vendor/lineage.

Test: make
Change-Id: I618a1e395ca1a14555cd50eef1a4f1aa079b553d

BoardConfig.mk

@@ -115,16 +115,6 @@ BOARD_USES_QCNE := true
 # Crypto
 TARGET_HW_DISK_ENCRYPTION := true
 
-# Dexpreopt
-ifeq ($(HOST_OS),linux)
-  ifneq ($(TARGET_BUILD_VARIANT),eng)
-    ifeq ($(WITH_DEXPREOPT),)
-      WITH_DEXPREOPT_BOOT_IMG_AND_SYSTEM_SERVER_ONLY := false
-      WITH_DEXPREOPT := true
-    endif
-  endif
-endif
-
 # Display
 TARGET_USES_ION := true
 TARGET_USES_GRALLOC1 := true