ASoC: wm8994: Remove unused variable

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm8994.c

@@ -3157,7 +3157,6 @@ static int wm8994_codec_suspend(struct snd_soc_codec *codec)
 static int wm8994_codec_resume(struct snd_soc_codec *codec)
 {
 	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
-	struct wm8994 *control = wm8994->wm8994;
 	int i, ret;
 
 	for (i = 0; i < ARRAY_SIZE(wm8994->fll); i++) {