Revert "Keyguard: Implement quick unlock feature [1/2]"

This reverts commit 84e0bc8df498af6102b2a35d9a16fef1a55c592a.

Signed-off-by: cj360 <ayunker551@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java

Change-Id: I5cae9e5f7f17d9ca8a46e15a47992b26f68c6629