Mirror the behavior of http://httpd.apache.org/docs/1.3/ and unpublish

this obsolete httpd-2.0 documentation from the search engine perspective.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@1825087 13f79535-47bb-0310-9956-ffa450edef68