Purge vestigial sound settings

Remove "play on headset connect"

Revert "Add safe headset volume check (2/2) Credit: CyanogenMod"

Change-Id: If090e8408c8467e9ab8d19ab625f91c2d1b1453e
Transparency control overhaul

Credit Romanbb

http://gerrit.sudoservers.com/#/c/5280/

Change-Id: Iee518311159117003c86e60ecbe08ee8886615e5