vhost: remove the dead code

remove the dead code
Signed-off-by: NJie Wang <wangjie88@huawei.com>
Message-Id: <1556604614-32081-1-git-send-email-wangjie88@huawei.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>

hw/virtio/vhost.c

@@ -1650,7 +1650,6 @@ fail_vq:
                              hdev->vqs + i,
                              hdev->vq_index + i);
     }
-    i = hdev->nvqs;
 
 fail_mem:
 fail_features: