audio_policy: Remove lpa and tunnel.

These are causing system lag when audio is initiated.  Revist later.

Change-Id: I9585bead9be586d3ff51f0f4d34175e9173bbf29
audio_policy: Fixup.

- Working BT audio.
- Additional usb audio (untested)

Change-Id: Iac5e0f9ae12d8d58fd5f01fa7148b09e2a8d47ca