Revert "[WIP] LockScreen: allow long-press actions from hardware keys (2/2)"

Conflicts with SlimROM hardware key rebinding.
Revert for now till I find a solution.

This reverts commit 12678175034d707de56236b5d3fc8b48db5a932f.

Conflicts:

	src/com/android/settings/cyanogenmod/LockscreenInterface.java