Revert "fb: add back notification shortcuts feature + common slim classes"

This reverts commit 37aab9e196805cbf7af734eb96c9af3e3b06cab6.
Revert "Custom Navring Targets (1/2)"

This reverts commit 3a6a5236f03112c7cfd74ad482b5b9838738d606.

Conflicts:
	core/java/android/provider/Settings.java
	core/java/com/android/internal/util/cm/NavigationRingConstants.java
	core/java/com/android/internal/util/cm/NavigationRingHelpers.java
	core/java/com/android/internal/widget/multiwaveview/GlowPadView.java
	core/res/res/values/pa_symbols.xml
	packages/SystemUI/res/values/pa_strings.xml
	packages/SystemUI/src/com/android/systemui/SearchPanelView.java
	packages/SystemUI/src/com/android/systemui/cm/ActionTarget.java