ASoC: lm49453: 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>
Link: https://lore.kernel.org/r/20220603140513.131142-4-u.kleine-koenig@pengutronix.deSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/lm49453.c

@@ -1442,11 +1442,6 @@ static int lm49453_i2c_probe(struct i2c_client *i2c)
 	return ret;
 }
 
-static int lm49453_i2c_remove(struct i2c_client *client)
-{
-	return 0;
-}
-
 static const struct i2c_device_id lm49453_i2c_id[] = {
 	{ "lm49453", 0 },
 	{ }
@@ -1458,7 +1453,6 @@ static struct i2c_driver lm49453_i2c_driver = {
 		.name = "lm49453",
 	},
 	.probe_new = lm49453_i2c_probe,
-	.remove = lm49453_i2c_remove,
 	.id_table = lm49453_i2c_id,
 };