ASoC: remove cache_bypass from snd_soc_codec

snd_soc_codec .cache_bypass related operation code has been removed.
Let's remove remaining code.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc.h

@@ -894,7 +894,6 @@ struct snd_soc_codec {
 	struct list_head list;
 
 	/* runtime */
-	unsigned int cache_bypass:1; /* Suppress access to the cache */
 	unsigned int cache_init:1; /* codec cache has been initialized */
 
 	/* codec IO */

sound/soc/codecs/max98927.c

@@ -577,7 +577,6 @@ static int max98927_probe(struct snd_soc_codec *codec)
 
 	max98927->codec = codec;
 	codec->control_data = max98927->regmap;
-	codec->cache_bypass = 1;
 
 	/* Software Reset */
 	regmap_write(max98927->regmap,