ASoC: soc-dai.h: remove symmetric_xxx from snd_soc_dai

ALSA SoC has some duplicate parameter.
snd_soc_dai::symmetric_xxx are one of them.

commit f0fba2ad1b6b ("ASoC: multi-component - ASoC Multi-Component
Support") moved "symmetric_xxx" flags from snd_soc_dai to
snd_soc_dai_driver. No one is using snd_soc_dai::symmetric_xxx now.
Let's remove it

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-dai.h

@@ -294,9 +294,6 @@ struct snd_soc_dai {
 	/* DAI runtime info */
 	unsigned int capture_active:1;		/* stream is in use */
 	unsigned int playback_active:1;		/* stream is in use */
-	unsigned int symmetric_rates:1;
-	unsigned int symmetric_channels:1;
-	unsigned int symmetric_samplebits:1;
 	unsigned int probed:1;
 
 	unsigned int active;