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

This reverts commit 595e1a83e1efa7dd627becd5b9ffba8d00d61f3e.

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

Conflicts:
	res/values/pa_strings.xml

Change-Id: Ia64d1cd60236b7472729251f187a67f078845a70