ASoC: Remove excessively verbose logging on I2C write

We don't need to log every I2C transfer, and certainly not at error level.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/soc-cache.c

@@ -245,7 +245,6 @@ static unsigned int do_i2c_read(struct snd_soc_codec *codec,
 	xfer[1].buf = data;
 
 	ret = i2c_transfer(client->adapter, xfer, 2);
-	dev_err(&client->dev, "i2c_transfer() returned %d\n", ret);
 	if (ret == 2)
 		return 0;
 	else if (ret < 0)