net: dsa: mt7530: remove unnecessary dev_set_drvdata()

Remove unnecessary dev_set_drvdata() in ->remove(), the driver_data will
be set to NULL in device_unbind_cleanup() after calling ->remove().
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/mt7530.c

@@ -3300,8 +3300,6 @@ mt7530_remove(struct mdio_device *mdiodev)
 
 	dsa_unregister_switch(priv->ds);
 	mutex_destroy(&priv->reg_mutex);
-
-	dev_set_drvdata(&mdiodev->dev, NULL);
 }
 
 static void mt7530_shutdown(struct mdio_device *mdiodev)