Revert "Quiet Hours: Allow disabling phone ringer (3/3)"

This reverts commit 24fed8f7ab8199c84ba93c0aa39403e9a1e00595.
Quiet Hours: Allow disabling phone ringer (3/3)

Change-Id: Ibb72266a233e44c932bdb10381a97e0ec82596c9
Merge branch 'cm-11.0' of https://github.com/DarkCyanogenMod/android_packages_services_Telephony into cm-11.0