V4L/DVB: cx18-alsa: remove a couple of warnings

Remove a couple of warnings from dead code during driver development.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/cx18/cx18-alsa-main.c

@@ -255,7 +255,6 @@ static int cx18_alsa_exit_callback(struct device *dev, void *data)
 {
 	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
 	struct snd_cx18_card *cxsc;
-	struct cx18 *cx;
 
 	if (v4l2_dev == NULL) {
 		printk(KERN_ERR "cx18-alsa: %s: struct v4l2_device * is NULL\n",

drivers/media/video/cx18/cx18-alsa-pcm.c

@@ -75,7 +75,6 @@ static int snd_cx18_pcm_capture_open(struct snd_pcm_substream *substream)
 	struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct v4l2_device *v4l2_dev = cxsc->v4l2_dev;
-	struct snd_card *sc = cxsc->sc;
 	struct cx18 *cx = to_cx18(v4l2_dev);
 	struct cx18_stream *s;
 	struct cx18_open_id *item;