How on Earth can someone REMOVE pages from the Wayback Machine? That should be a sacrosanct archive - unalterable forever.
They don't view themselves that way:
"The Internet Archive is not interested in offering access to Web sites or other Internet documents whose authors do not want their materials in the collection. To remove your site from the Wayback Machine, place a robots.txt xfile at the top level of your site (e.g. www.yourdomain.com/robots.txt) and then submit your site below." (link)
.txt robots which essentially bounce the server requests back.