HearingAid RemoveDevice - don't crash when profile not enabled

  void RemoveDevice(const RawAddress& address) override {

    DVLOG(2) << __func__ << " address: " << address;

    // RemoveDevice can be called on devices that don't have HA enabled

    if (HearingAid::IsInitialized()) {

      do_in_bta_thread(FROM_HERE, Bind(&HearingAid::Disconnect,

                                       Unretained(HearingAid::Get()), address));

    }

    do_in_jni_thread(FROM_HERE,

                     Bind(&btif_storage_remove_hearing_aid, address));

  }