Revert "audio: Always offload audio for AV"

 * Framework offload path is too racy and the root issue this was
   addressing is resolved now.

This reverts commit 6f03c6068a26636f68038402a84d371f64d54ddf.

Change-Id: I35f9a5b2a613bdff056630dffeecd7117657cc85
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_hardware_qcom_audio-caf into kk