Revert "Settings: Allow All Widgets On Keyguard (2/2)"

This reverts commit 1fa63a2655a60591f718b7a88e9b989194b517eb.
Settings: Allow All Widgets On Keyguard (2/2)

Another user request with zero device impact
	for daily usage, so I went ahead and
	did it.

Change-Id: Ic87099be744255309674ca855a9376c715903781

Conflicts:
	res/values/slim_strings.xml
	res/xml/lockscreen_widgets.xml
	src/com/android/settings/slim/LockscreenWidgets.java