Revert "Bluetooth: Validate the device for A2dpSink"

This reverts commit 7342d9f197e042d3f13358e270ee1c79d69e1747.
Revert "Bluetooth: A2dp: Add A2dp Source UUID"

This reverts commit 13e476075b46d3689c1272f4dbfebc977c20cdbb.
Revert "Bluetooth: disable scan icon when BT state is off"

This reverts commit 6558613b1179f552c1462a65c65c354c112d465a.