ASoC: da732x: Remove unused codec field form da732x_priv struct

The field is initialized in the probe callback, but never used again. So it
can be removed.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/da732x.c

@@ -35,7 +35,6 @@
 
 struct da732x_priv {
 	struct regmap *regmap;
-	struct snd_soc_codec *codec;
 
 	unsigned int sysclk;
 	bool pll_en;
@@ -1512,8 +1511,6 @@ static int da732x_probe(struct snd_soc_codec *codec)
 {
 	struct da732x_priv *da732x = snd_soc_codec_get_drvdata(codec);
 
-	da732x->codec = codec;
-
 	da732x_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 
 	return 0;