Revert "Quick launch shortcuts"

This reverts commit 8351e4fbeef189380322478d616d889bc95adcd6.

Conflicts:
	core/java/android/provider/Settings.java
	core/java/com/android/internal/util/rascarlo/NavigationRingHelpers.java
	packages/SystemUI/src/com/android/systemui/SearchPanelView.java
	packages/SystemUI/src/com/android/systemui/rascarlo/ActionTarget.java

Change-Id: I6adaca456d582a010b7370da208cc309dbdbbc10