ASoC: atmel: Drop superfluous ioctl PCM ops

ASoC PCM core deals the empty ioctl field now as default.
Let's kill the redundant lines.

Cc: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20191210145406.21419-3-tiwai@suse.deSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/atmel/atmel-pcm-pdc.c

@@ -379,7 +379,6 @@ static int atmel_pcm_close(struct snd_soc_component *component,
 static const struct snd_soc_component_driver atmel_soc_platform = {
 	.open		= atmel_pcm_open,
 	.close		= atmel_pcm_close,
-	.ioctl		= snd_soc_pcm_lib_ioctl,
 	.hw_params	= atmel_pcm_hw_params,
 	.hw_free	= atmel_pcm_hw_free,
 	.prepare	= atmel_pcm_prepare,