To not show the image: vboptions > Registration Options > Image Verification > No.
I'm not sure about the Unregistered cuz mine doesn't look like that. But, I'd guess it is in the template "register"
But that will remove the image verification from the Registration, and that would be a desaster! I just want to remove it from the posting. That screencap was taken from a guest trying to post in a specific forum where this is allowed.