ASoC: xtensa: Drop superfluous ioctl PCM ops

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

Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191210145406.21419-22-tiwai@suse.deSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/xtensa/xtfpga-i2s.c

@@ -481,7 +481,6 @@ static const struct snd_soc_component_driver xtfpga_i2s_component = {
 	.name		= DRV_NAME,
 	.open		= xtfpga_pcm_open,
 	.close		= xtfpga_pcm_close,
-	.ioctl		= snd_soc_pcm_lib_ioctl,
 	.hw_params	= xtfpga_pcm_hw_params,
 	.trigger	= xtfpga_pcm_trigger,
 	.pointer	= xtfpga_pcm_pointer,