ASoC: wm8731: Delete empty remove() function

The I2C remove function is empty for the wm8731 driver, it can just be
deleted.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220211165811.1176005-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm8731.c

@@ -777,11 +777,6 @@ static int wm8731_i2c_probe(struct i2c_client *i2c,
 	return 0;
 }
 
-static int wm8731_i2c_remove(struct i2c_client *client)
-{
-	return 0;
-}
-
 static const struct i2c_device_id wm8731_i2c_id[] = {
 	{ "wm8731", 0 },
 	{ }
@@ -794,7 +789,6 @@ static struct i2c_driver wm8731_i2c_driver = {
 		.of_match_table = wm8731_of_match,
 	},
 	.probe =    wm8731_i2c_probe,
-	.remove =   wm8731_i2c_remove,
 	.id_table = wm8731_i2c_id,
 };
 #endif