opscode/bento — pull request #245 by juliandunn (2014-08-01 00:09:58+00:00)
Title: Remove Ubuntu 13.10 as it is EOL as of July 17, 2014.

https://lists.ubuntu.com/archives/ubuntu-announce/2014-June/000185.html

Also removed dangling preseed.cfgs from previously EOL'd releases.