ASoC: au1x: Drop superfluous ioctl PCM ops

ASoC PCM core deals the empty ioctl field now as default.
Let's kill the redundant lines.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191210145406.21419-4-tiwai@suse.deSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/au1x/dbdma2.c

@@ -326,7 +326,6 @@ static struct snd_soc_component_driver au1xpsc_soc_component = {
 	.name		= DRV_NAME,
 	.open		= au1xpsc_pcm_open,
 	.close		= au1xpsc_pcm_close,
-	.ioctl		= snd_soc_pcm_lib_ioctl,
 	.hw_params	= au1xpsc_pcm_hw_params,
 	.hw_free	= au1xpsc_pcm_hw_free,
 	.prepare	= au1xpsc_pcm_prepare,

sound/soc/au1x/dma.c

@@ -302,7 +302,6 @@ static struct snd_soc_component_driver alchemy_pcm_soc_component = {
 	.name		= DRV_NAME,
 	.open		= alchemy_pcm_open,
 	.close		= alchemy_pcm_close,
-	.ioctl		= snd_soc_pcm_lib_ioctl,
 	.hw_params	= alchemy_pcm_hw_params,
 	.hw_free	= alchemy_pcm_hw_free,
 	.trigger	= alchemy_pcm_trigger,