Remove CacheOn config directive since it is set but never checked.
No sense wasting cycles on unused code. Besides, the only truly
bug free code is deleted code. :)   [Paul J. Reder]


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@96548 13f79535-47bb-0310-9956-ffa450edef68