m8: remove deprecated overlays, disable perf overlays for now

Change-Id: I604c4b7c39b07acf62d6e44b785c9a65f6cb56b8

Conflicts:
	overlay/frameworks/base/core/res/res/values/config.xml
m8: remove qrngd and qrngp

Change-Id: I5adbdf648a8bf0f8aedf1023391c2dc00ce84258