ASoC: Remove unused 'r' variable from dapm_connect_dai_link_widgets()

It was accidentally added in commit 44ba2641 ("ASoC: dapm: Add support for DAI
multicodec").
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/soc-dapm.c

@@ -3399,11 +3399,8 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
 {
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 	struct snd_soc_dapm_widget *sink, *source;
-	struct snd_soc_dapm_route r;
 	int i;
 
-	memset(&r, 0, sizeof(r));
-
 	for (i = 0; i < rtd->num_codecs; i++) {
 		struct snd_soc_dai *codec_dai = rtd->codec_dais[i];