ASoC: rt715: remove unused parameter

Remove unused parameter in rt715.h.
Signed-off-by: Jack Yu <jack.yu@realtek.com>
Link: https://lore.kernel.org/r/20201202021336.3591-1-jack.yu@realtek.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt715.h

@@ -207,7 +207,6 @@ struct sdw_stream_data {
 enum {
 	RT715_AIF1,
 	RT715_AIF2,
-	RT715_AIFS,
 };
 
 #define RT715_POWER_UP_DELAY_MS 400