ASoC: tpa6130a2: Remove obsolete cleanup for clientdata

The i2c core will clear the clientdata pointer automatically,
we don't have to set the `data' field to NULL in remove() or
if probe() failed anymore.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/tpa6130a2.c

@@ -446,7 +446,6 @@ err_regulator:
 		gpio_free(data->power_gpio);
 err_gpio:
 	kfree(data);
-	i2c_set_clientdata(tpa6130a2_client, NULL);
 	tpa6130a2_client = NULL;
 
 	return ret;