msm8960: remove deprecated audio policy HAL

- it's disabled anyways

https://github.com/CyanogenMod/android_hardware_qcom_audio/commit/94e60883ba336f653965252441710fc1001ebd9c

Change-Id: I5b2a55685c8f6bf7183a78636806e9f1d6ea00a2
Merge remote-tracking branch 'cm/cm-12.0' into HEAD