Revert "Camera: Powerkey shutter (2/2)"

This reverts commit d66e59ddeb9d45ca31ad71c662a4c4e62b196468.

Conflicts:
	res/values/cm_strings.xml
	res/xml/video_preferences.xml
	src/com/android/camera/CameraSettings.java
	src/com/android/camera/PhotoMenu.java
	src/com/android/camera/VideoMenu.java
	src/com/android/camera/VideoModule.java