Revert "Settings: Gesture Lockscreen (2/2)"

This reverts commit 3059147d672b2147257cb1e8553a2bf239d883ab.

Signed-off-by: scott <scott@ubuntu>

Conflicts:
	res/values/slim_strings.xml

Change-Id: I0dadf8d8f0683808cd6a3a142446ff88549d84f9