Update preloaded-classes-blacklist

To match what was used for RVC profile.

Bug: 152574358
Test: Config file used in boot image profile generation
Merged-In: I5be50e9ec2a43d82dd5225b2f685897afa40d818
Change-Id: I5be50e9ec2a43d82dd5225b2f685897afa40d818

config/preloaded-classes-blacklist

 android.content.AsyncTaskLoader$LoadTask
 android.net.ConnectivityThread$Singleton
+android.os.AsyncTask
 android.os.FileObserver
+android.os.NullVibrator
 android.speech.tts.TextToSpeech$Connection$SetupConnectionAsyncTask
 android.widget.Magnifier
-sun.nio.fs.UnixChannelFactory
+com.android.server.BootReceiver$2