net: dsa: realtek: remove unnecessary set_drvdata()

Remove unnecessary set_drvdata(NULL) function 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>
Acked-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/realtek/realtek-mdio.c

@@ -245,8 +245,6 @@ static void realtek_mdio_remove(struct mdio_device *mdiodev)
 	/* leave the device reset asserted */
 	if (priv->reset)
 		gpiod_set_value(priv->reset, 1);
-
-	dev_set_drvdata(&mdiodev->dev, NULL);
 }
 
 static void realtek_mdio_shutdown(struct mdio_device *mdiodev)

drivers/net/dsa/realtek/realtek-smi.c

@@ -522,8 +522,6 @@ static int realtek_smi_remove(struct platform_device *pdev)
 	if (priv->reset)
 		gpiod_set_value(priv->reset, 1);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }