ASoC: samsung: Drop superfluous ioctl PCM ops

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

Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191210145406.21419-14-tiwai@suse.deSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/samsung/idma.c

@@ -394,7 +394,6 @@ EXPORT_SYMBOL_GPL(idma_reg_addr_init);
 static const struct snd_soc_component_driver asoc_idma_platform = {
 	.open		= idma_open,
 	.close		= idma_close,
-	.ioctl		= snd_soc_pcm_lib_ioctl,
 	.trigger	= idma_trigger,
 	.pointer	= idma_pointer,
 	.mmap		= idma_mmap,