Remove AUDIO_* properties.

See go/aae-audio for an implementation guide for automotive that does
not rely upon these car specific properties.  The very small remaining
automotive specific elements will be represented in the automotive audio
control HAL.

Change-Id: Ia2147a8e486bdb896097771970f0527fc630b9c4
Test:  not yet.  Will run vhal VTS tests.
2 files changed