V4L/DVB: cleanup redundant tests on unsigned

Remove redundant tests on unsigned.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index 9e0f2b0..24b3c1d 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
@@ -267,7 +267,7 @@
 		memset(&tmp,0,sizeof(tmp));
 		tmp.index = vi->index;
 		ret = 0;
-		if ((vi->index < 0) || (vi->index >= fh->input_cnt)) {
+		if (vi->index >= fh->input_cnt) {
 			ret = -EINVAL;
 			break;
 		}
@@ -331,7 +331,7 @@
 	case VIDIOC_S_INPUT:
 	{
 		struct v4l2_input *vi = (struct v4l2_input *)arg;
-		if ((vi->index < 0) || (vi->index >= fh->input_cnt)) {
+		if (vi->index >= fh->input_cnt) {
 			ret = -ERANGE;
 			break;
 		}