ASoC: SAMSUNG: Remove duplicated snd_card on smdk_spdif

This patch remove duplicated snd_card defination on smdk_spdif.
Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>
Acked-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/samsung/smdk_spdif.c

@@ -152,8 +152,6 @@ static struct snd_soc_ops smdk_spdif_ops = {
 	.hw_params = smdk_hw_params,
 };
 
-static struct snd_soc_card smdk;
-
 static struct snd_soc_dai_link smdk_dai = {
 	.name = "S/PDIF",
 	.stream_name = "S/PDIF PCM Playback",