tree 7e0b0278f71c7667784612a83af8f43ff08bf708
parent 391f1bb93d5720bfe1a025307178b3208a3ce7d7
author Glenn Kasten <gkasten@google.com> 1354225094 -0800
committer Glenn Kasten <gkasten@google.com> 1354557457 -0800

AudioTrack::mute() is unused so remove it

If ever needed again, it could be implemented on client side by forcing
a track volume of 0.

Change-Id: I88a9b4f675b6dca2948549414f9ec2c192d29269