Quiet Hours: Allow disabling phone ringer (2/3)

Change-Id: Ica45cded1b70af36f9e0efdc5ec6911a138e0551
Revert "Quiet Hours: Allow disabling phone ringer (2/3)"

This reverts commit fa20fd02ced26b9c4cc188c1dabe86e8d3a21e81.
Merge remote-tracking branch 'cm/cm-11.0' into HEAD