ALSA: pcmcia: Drop superfluous ioctl PCM ops

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

(*) commit fc033cbf ("ALSA: pcm: Allow NULL ioctl ops")

Link: https://lore.kernel.org/r/20191210061145.24641-17-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c

@@ -238,7 +238,6 @@ static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *sub
 static const struct snd_pcm_ops pdacf_pcm_capture_ops = {
 	.open =		pdacf_pcm_capture_open,
 	.close =	pdacf_pcm_capture_close,
-	.ioctl =	snd_pcm_lib_ioctl,
 	.prepare =	pdacf_pcm_prepare,
 	.trigger =	pdacf_pcm_trigger,
 	.pointer =	pdacf_pcm_capture_pointer,