ASoC: Remove unneeded mutex_init in wl1273_probe()

Since f0fba2ad "ASoC: multi-component - ASoC Multi-Component Support",
snd_soc_register_codec() now does all the codec list and mutex init.
Thus don't need to call mutex_init(&codec->mutex) in wl1273_probe() any more.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wl1273.c

@@ -462,7 +462,6 @@ static int wl1273_probe(struct snd_soc_codec *codec)
 	wl1273->core = *core;
 
 	snd_soc_codec_set_drvdata(codec, wl1273);
-	mutex_init(&codec->mutex);
 
 	r = snd_soc_add_controls(codec, wl1273_controls,
 				 ARRAY_SIZE(wl1273_controls));