remove overlay for vibrator

Vibrator voltage tuning is now available. This should be useless.

Change-Id: I90d4c6099c8e8aa7e1a5fb263f0233f96a4e4df1
set permissions for vibrator's voltage_level sysfs entry

Change-Id: Ibc0c238c94557b7f482fa8ab46bf76b41a8fd540
Merge branch 'cm-11.0' of https://github.com/Mustaavalkosta/android_device_htc_ace into cd-4.4