Revert "omni performancecontrol >>> CM performance settings"

This reverts commit f68cd2c3114bccc15930bdba02087f4377582e4a.

Conflicts:

	AndroidManifest.xml
	res/xml/settings_headers.xml
	src/com/android/settings/Settings.java

Change-Id: I3779027212fbb51ee4b33b73a2cc329dc6383e99