Revert "Ported my low-incall volume fix from CM-10.2 to CM-11.0"

This reverts commit 3718dbeab80419be2671bcec0d2b7589adaffb63.

Change-Id: I8c8c693cf7ed19d1863c8113d56951449d579e02
Merge "Revert "Ported my low-incall volume fix from CM-10.2 to CM-11.0"" into kitkat