Allow Carkit to trigger play immediately after call

Removing check in stack where AVRCP Play and Pause commands
are being dropped if carkit initiates play or pause within
six seconds.
This addresses the scenario where JCI-Mazda CK pauses the
streaming by initiating Avrcp Pause right before making call
and can not resume the streaming by sending Avrcp Play right
after call ends.

Change-Id: Ibb04223de746f528b356e78bd65130d3fd526a44