Remove ap_excess_requests_per_child reference that broke compilation,

for now anyway.  Likewise for run mode, which is now obsolete.

Submitted by:	Manoj Kasichainula


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@83792 13f79535-47bb-0310-9956-ffa450edef68