ASoC: wm8994: Remove ASoC level register cache sync

Now we've switched over to regmap the ASoC level cache sync will be
ineffectual and potentially harmful as there is no longer an ASoC level
cache.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm8994.c

@@ -2753,11 +2753,6 @@ static int wm8994_resume(struct snd_soc_codec *codec)
 		codec->cache_only = 0;
 	}
 
-	/* Restore the registers */
-	ret = snd_soc_cache_sync(codec);
-	if (ret != 0)
-		dev_err(codec->dev, "Failed to sync cache: %d\n", ret);
-
 	wm8994_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 
 	for (i = 0; i < ARRAY_SIZE(wm8994->fll); i++) {