Revert "[2/2] Slim's navbar customization"

This reverts commit 7dd6489e3b6c28202bf7774db748d8bf47cf91ff.

Conflicts:
	res/values/pa_arrays.xml
	res/values/pa_strings.xml
	res/xml/navigation_bar_settings.xml
	src/com/android/settings/slim/dslv/ButtonsListViewSettings.java