ASoC: samsung: smdk_wm8580: remove unused ‘bfs’

In smdk_hw_params(), 'bfs' is initialized and assigned bits based on
params_width, but never used.

We could have removed the whole switch case but then driver might be
relying on checking bits, so I have kept the case for now.

sound/soc/samsung/smdk_wm8580.c: In function ‘smdk_hw_params’:
sound/soc/samsung/smdk_wm8580.c:35:6: warning: variable ‘bfs’ set but not used [-Wunused-but-set-variable]
  int bfs, rfs, ret;
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/samsung/smdk_wm8580.c

@@ -32,14 +32,11 @@ static int smdk_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 	unsigned int pll_out;
-	int bfs, rfs, ret;
+	int rfs, ret;
 
 	switch (params_width(params)) {
 	case 8:
-		bfs = 16;
-		break;
 	case 16:
-		bfs = 32;
 		break;
 	default:
 		return -EINVAL;