Check for a2dp profile when removing stale connection events

During disconnecting both a2dp output and input device, same
device is passed to handler but with different profile, to
avoid removing existing event in the handler, check the a2dp
profile as well.

CRs-Fixed: 2943846
Change-Id: I9d0eced33d57c46d6e49a74e958c488f3a07249c