Bluetooth: btwilink: Remove empty destruct cb

The destruct cb is optional so remove our empty dummy cb.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

drivers/bluetooth/btwilink.c

@@ -291,14 +291,6 @@ static int ti_st_send_frame(struct sk_buff *skb)
 	return 0;
 }
 
-static void ti_st_destruct(struct hci_dev *hdev)
-{
-	BT_DBG("%s", hdev->name);
-	/* do nothing here, since platform remove
-	 * would free the hdev->driver_data
-	 */
-}
-
 static int bt_ti_probe(struct platform_device *pdev)
 {
 	static struct ti_st *hst;
@@ -325,7 +317,6 @@ static int bt_ti_probe(struct platform_device *pdev)
 	hdev->close = ti_st_close;
 	hdev->flush = NULL;
 	hdev->send = ti_st_send_frame;
-	hdev->destruct = ti_st_destruct;
 	hdev->owner = THIS_MODULE;
 
 	err = hci_register_dev(hdev);