AudioService - remove sendBroadcastToAll() from setMasterMuteInternalNoCallerCheck()

sendBroadcastToAll is a duplicate broadcast of MASTER_MUTE_CHANGED_ACTION. The same broadcast is called by sendMasterMuteUpdate.

Test: make
Bug: 144352459
Change-Id: I0f5283fe35521f04c04c159d42bd907fccfb226f