Revert "Disable selecting the default audio route when a BT route is avaiable"

This reverts commit 0d33113196e0070829104bf178f3139262b1f33f.

Bug: 28517884, Bug: 31398128
Change-Id: Ida4a3fc1f6f0aae09a5c4463bca8619412f3db58
1 file changed