AudioService: no forced usage for media when hearing aid is connected

Undo forced usage for NO BT config set by wired device
connection or any other usage for media when hearing aid
device is connected.

Bug: 148883172
Test: plug USB headset, play music, connect hearing aid, verify music plays on hearing aid
Change-Id: I1db1d40eaf351fc6189ee8f8bb75003be374768a