QS: use vibrator check from DeviceUtils

Change-Id: I40677ce94884ef6e91e7680af703c36b0d2e14c7
remove power widget toggle bar option as it is borked.

Change-Id: I1dea93b42ed3f59c585acbf84699c80e66e1523f
Signed-off-by: scott <scott@ubuntu>