ASoC: wm8962: Clean up register dump cruft

No longer needed with regmap.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm8962.c

@@ -3630,20 +3630,11 @@ static int wm8962_remove(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static int wm8962_soc_volatile(struct snd_soc_codec *codec,
-			       unsigned int reg)
-{
-	return true;
-}
-
-
 static struct snd_soc_codec_driver soc_codec_dev_wm8962 = {
 	.probe =	wm8962_probe,
 	.remove =	wm8962_remove,
 	.set_bias_level = wm8962_set_bias_level,
 	.set_pll = wm8962_set_fll,
-	.reg_cache_size	= WM8962_MAX_REGISTER,
-	.volatile_register = wm8962_soc_volatile,
 	.idle_bias_off = true,
 };