Remove ap_get_server_conf() from the MPM's that implement. The only place

this function was ever called was inside the MPM's, and not all of the
MPM's actually had the function.  This is part of another round of common
code clean-up.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85736 13f79535-47bb-0310-9956-ffa450edef68