PR:

If SGI is going to break their links, I'm not about to go ferreting around
their site looking for where they moved it to.  Since the other entry is
generic for all OS's (or at least doesn't clearly state HOW it's related),
I've removed the SGI entry.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@80011 13f79535-47bb-0310-9956-ffa450edef68