V4L/DVB: v4l videobuf: remove unused is_mmapped field

Thanks to Pawel Osciak for noticing this.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c
index 52bb74b..d76a7d5 100644
--- a/drivers/media/video/videobuf-core.c
+++ b/drivers/media/video/videobuf-core.c
@@ -321,8 +321,6 @@
 		if (q->bufs[i] && q->bufs[i]->map)
 			return -EBUSY;
 
-	q->is_mmapped = 0;
-
 	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
 		if (NULL == q->bufs[i])
 			continue;
@@ -1089,7 +1087,6 @@
 
 	mutex_lock(&q->vb_lock);
 	retval = CALL(q, mmap_mapper, q, vma);
-	q->is_mmapped = 1;
 	mutex_unlock(&q->vb_lock);
 
 	return retval;
diff --git a/include/media/videobuf-core.h b/include/media/videobuf-core.h
index 345ec5a..22d5a02 100644
--- a/include/media/videobuf-core.h
+++ b/include/media/videobuf-core.h
@@ -166,7 +166,6 @@
 
 	unsigned int               streaming:1;
 	unsigned int               reading:1;
-	unsigned int		   is_mmapped:1;
 
 	/* capture via mmap() + ioctl(QBUF/DQBUF) */
 	struct list_head           stream;