ASoC: Remove runtime field from DAI

This was initially removed in commit 6423c187 ("ASoC: Remove runtime field from
DAI"), but was, presumably by accident, brought back in commit f0fba2ad ("ASoC:
multi-component - ASoC Multi-Component Support"). But has never been
initialized to anything but NULL ever since. This commit removes it again.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

include/sound/soc-dai.h

@@ -252,7 +252,6 @@ struct snd_soc_dai {
 	unsigned int symmetric_rates:1;
 	unsigned int symmetric_channels:1;
 	unsigned int symmetric_samplebits:1;
-	struct snd_pcm_runtime *runtime;
 	unsigned int active;
 	unsigned char probed:1;
 

sound/soc/soc-compress.c

@@ -203,7 +203,6 @@ static int soc_compr_free(struct snd_compr_stream *cstream)
 
 	if (platform->driver->compr_ops && platform->driver->compr_ops->free)
 		platform->driver->compr_ops->free(cstream);
-	cpu_dai->runtime = NULL;
 
 	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
 		if (snd_soc_runtime_ignore_pmdown_time(rtd)) {

sound/soc/soc-pcm.c

@@ -555,7 +555,6 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
 
 	if (platform->driver->ops && platform->driver->ops->close)
 		platform->driver->ops->close(substream);
-	cpu_dai->runtime = NULL;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		if (snd_soc_runtime_ignore_pmdown_time(rtd)) {