Simplify _remove() path for hci_nokia.c
Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabor.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
 static void nokia_bluetooth_serdev_remove(struct serdev_device *serdev)
 {
        struct nokia_bt_dev *btdev = serdev_device_get_drvdata(serdev);
-       struct hci_uart *hu = &btdev->hu;
-       struct hci_dev *hdev = hu->hdev;
 
-
-       hci_unregister_dev(hdev);
-       hci_free_dev(hdev);
-
-       cancel_work_sync(&hu->write_work);
-
-       hu->proto->close(hu);
+       hci_uart_unregister_device(&btdev->hu);
 }
 
 static int nokia_bluetooth_runtime_suspend(struct device *dev)