This reverts commit 93f874fe.

Now with virtio-vga being resetted properly the
crash workaround is not needed any more.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20180821111313.27792-3-kraxel@redhat.com