usb: typec: drop check because i2c_unregister_device() is NULL safe

No need to check the argument of i2c_unregister_device() because the
function itself does it.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Link: https://lore.kernel.org/r/20230922080421.35145-2-wsa+renesas@sang-engineering.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/typec/anx7411.c

@@ -1550,8 +1550,7 @@ static void anx7411_i2c_remove(struct i2c_client *client)
 	if (plat->workqueue)
 		destroy_workqueue(plat->workqueue);
 
-	if (plat->spi_client)
-		i2c_unregister_device(plat->spi_client);
+	i2c_unregister_device(plat->spi_client);
 
 	if (plat->typec.role_sw)
 		usb_role_switch_put(plat->typec.role_sw);