ASoC: remove rtd->num

No one is using rtd->num. Let's remove it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87sesmb852.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: morimoto

include/sound/soc.h

@@ -1195,7 +1195,6 @@ struct snd_soc_pcm_runtime {
 	struct dentry *debugfs_dpcm_root;
 #endif
 
-	unsigned int num; /* REMOVE ME */
 	unsigned int id; /* 0-based and monotonic increasing */
 	struct list_head list; /* rtd list of the soc card */
 

sound/soc/soc-core.c

@@ -559,7 +559,6 @@ static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
 	rtd->card	= card;
 	rtd->dai_link	= dai_link;
 	rtd->id		= card->num_rtd++;
-	rtd->num	= rtd->id;			/* REMOVE ME */
 	rtd->pmdown_time = pmdown_time;			/* default power off timeout */
 
 	/* see for_each_card_rtds */