Revert "Base: App Circle sidebar (add support Samsung multiwindow flags)"

This reverts commit e20625dc7b234edc71b224388ffb17674feb33d9.
Revert "Base: App Circle sidebar (add support floating window)"

This reverts commit 96afb2d014d788a862006de66916904dc53e99fb.
Revert "[1/2] Base: implement App circle sidebar"

This reverts commit 5c11894f801d901ef0eefc7d812f93b337ebee71.

Conflicts:
	core/java/android/provider/Settings.java