CentOS docs - Dec 2014 - http://mirror.centos.org/centos/6/fasttrack/CentOS-fasttrack.repo ==> 404

The *CentOS-Fasttrack *paragraph of
http://wiki.centos.org/AdditionalResources/Repositories links to
http://mirror.centos.org/centos/6/fasttrack/CentOS-fasttrack.repo which
returns a 404.

https://web.archive.org/web/20141011004000/http://mirror.centos.org/centos/6/fasttrack/CentOS-fasttrack.repo
is a copy captured on Oct 11, 2014, which indicates CentOS-6 Fasttrack was
around at that time.

I'm looking for suggestions on how to proceed.
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