Revert "Settings: Configurable 0, 90, 180 and 270 degree rotation (2/2)"

This reverts commit 2d5432f25be00eca3e06f1e53f743ca94586a67b.

Conflicts:
	proguard.flags
	res/values/cr_strings.xml
	res/xml/display_rotation.xml
	res/xml/display_settings.xml
	src/com/android/settings/DisplaySettings.java
	src/com/android/settings/slim/DisplayRotation.java