Fix Build Error
Fix Build Error
Revert "NavigationBar : Customization"

This reverts commit bb1fdc6ed25006eb296a1a538b7fccd44f9d54da.

Conflicts:
	packages/SystemUI/res/drawable-xhdpi/ic_sysbar_back_land.png
	packages/SystemUI/res/values/strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavbarEditor.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
	packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonView.java