[media] ivtv-ioctl.c: remove an useless check

drivers/media/pci/ivtv/ivtv-ioctl.c: In function 'ivtv_s_input':
drivers/media/pci/ivtv/ivtv-ioctl.c:996:2: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]

Cc: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/pci/ivtv/ivtv-ioctl.c

@@ -993,7 +993,7 @@ int ivtv_s_input(struct file *file, void *fh, unsigned int inp)
 	v4l2_std_id std;
 	int i;
 
-	if (inp < 0 || inp >= itv->nof_inputs)
+	if (inp >= itv->nof_inputs)
 		return -EINVAL;
 
 	if (inp == itv->active_input) {