virtio: remove obsolete virtqueue_get_queue_index()

You can access it directly now, since 3.8: v3.7-rc1-13-g06ca287
'virtio: move queue_index and num_free fields into core struct
virtqueue.'

Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 57ac4b0..f7d67e8 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -154,7 +154,7 @@
  */
 static int vq2txq(struct virtqueue *vq)
 {
-	return (virtqueue_get_queue_index(vq) - 1) / 2;
+	return (vq->index - 1) / 2;
 }
 
 static int txq2vq(int txq)
@@ -164,7 +164,7 @@
 
 static int vq2rxq(struct virtqueue *vq)
 {
-	return virtqueue_get_queue_index(vq) / 2;
+	return vq->index / 2;
 }
 
 static int rxq2vq(int rxq)