Revert "diag: Mode reset command has to be handled on APPS proc"

This reverts commit c26b5fd9aaaa6961021fae2196ffe40e86a3eeb0.
Revert "Update audio_policy.conf added deep_buffer and USB audio support!"

This reverts commit ef5516499e69259f076395086d678fa494753c27.
Revert "Restore Audio Policy close to default. but not all. sound is perfect."

This reverts commit 4c23e4ecd91941d630db0c57ff0505a9b2c3bacb.