i2c: dummy: Drop no-op remove function

A remove callback that just returns 0 is equivalent to no callback at all
as can be seen in i2c_device_remove(). So simplify accordingly.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

drivers/i2c/i2c-core-base.c

@@ -1023,15 +1023,9 @@ static int dummy_probe(struct i2c_client *client,
 	return 0;
 }
 
-static int dummy_remove(struct i2c_client *client)
-{
-	return 0;
-}
-
 static struct i2c_driver dummy_driver = {
 	.driver.name	= "dummy",
 	.probe		= dummy_probe,
-	.remove		= dummy_remove,
 	.id_table	= dummy_id,
 };