ASoC: txx9: 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/20191210145406.21419-19-tiwai@suse.deSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/txx9/txx9aclc.c

@@ -406,7 +406,6 @@ static const struct snd_soc_component_driver txx9aclc_soc_component = {
 	.remove		= txx9aclc_pcm_remove,
 	.open		= txx9aclc_pcm_open,
 	.close		= txx9aclc_pcm_close,
-	.ioctl		= snd_soc_pcm_lib_ioctl,
 	.hw_params	= txx9aclc_pcm_hw_params,
 	.hw_free	= txx9aclc_pcm_hw_free,
 	.prepare	= txx9aclc_pcm_prepare,