Settings: Only disable menu unlock options with custom keyguard

These buttons have a proper use case with the regular lock
screen, but are not applicable to our custom lockscreen.

Change-Id: Ic5af82bc1998a2960ba44d4235881d46e5081e5b
Signed-off-by: Roman Birg <roman@cyngn.com>
Merge "Settings: Only disable menu unlock options with custom keyguard" into cm-11.0