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
(cherry picked from commit 289b465c2958f8d7247ee7ebe45bdd4ee269f66e)