net: dsa: b53: remove unnecessary spi_set_drvdata()

Remove unnecessary spi_set_drvdata() in b53_spi_remove(), the
driver_data will be set to NULL in device_unbind_cleanup() after
calling ->remove().
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220705131733.351962-1-yangyingliang@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/b53/b53_spi.c

@@ -320,8 +320,6 @@ static void b53_spi_remove(struct spi_device *spi)
 
 	if (dev)
 		b53_switch_remove(dev);
-
-	spi_set_drvdata(spi, NULL);
 }
 
 static void b53_spi_shutdown(struct spi_device *spi)