msm8960-common: remove Qualcomm audio fw policy

This is now in core sepolicy, see http://review.cyanogenmod.org/62219

Change-Id: I72f657106fad7623e8f152c3d47e9103134646b5
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_htc_msm8960-common into kk_mkt