Revert "Bluetooth: Enabling WBS feature in BT app."

This reverts commit f30e459343a3e3553019fafd5aeb1e8a6ae67388.

Conflicts:
	src/com/android/bluetooth/hfp/HeadsetStateMachine.java

Change-Id: I24da3c5fa6984487934d2bb42d4f9dc80509df12