ASoC: rt5682: use devm_snd_soc_register_component()

We have devm_xxx version of snd_soc_register_component,
let's use it.

This patch also removes related empty functions
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5682.c

@@ -2662,17 +2662,11 @@ static int rt5682_i2c_probe(struct i2c_client *i2c,
 
 	}
 
-	return snd_soc_register_component(&i2c->dev, &soc_component_dev_rt5682,
+	return devm_snd_soc_register_component(&i2c->dev,
+					&soc_component_dev_rt5682,
 					rt5682_dai, ARRAY_SIZE(rt5682_dai));
 }
 
-static int rt5682_i2c_remove(struct i2c_client *i2c)
-{
-	snd_soc_unregister_component(&i2c->dev);
-
-	return 0;
-}
-
 static void rt5682_i2c_shutdown(struct i2c_client *client)
 {
 	struct rt5682_priv *rt5682 = i2c_get_clientdata(client);
@@ -2703,7 +2697,6 @@ static struct i2c_driver rt5682_i2c_driver = {
 		.acpi_match_table = ACPI_PTR(rt5682_acpi_match),
 	},
 	.probe = rt5682_i2c_probe,
-	.remove = rt5682_i2c_remove,
 	.shutdown = rt5682_i2c_shutdown,
 	.id_table = rt5682_i2c_id,
 };