Remove test media

Change-Id: I2944486a6d168c9a6ab685988b261e8511e9d47d
Disable debug music transport control

Change-Id: I5b458899b0ce5157980ee2fe406af2e2191ee0e2
Fix Google backup/restore

Change-Id: Idd5f63caf58742fc7a52d42e8e64731387983876