Update an old comment.

* modules/proxy/mod_proxy_fcgi.c
  (proxy_fcgi_handler): Stop describing the old URL style, remove a stray
   empty line.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/fcgi-proxy-dev@371431 13f79535-47bb-0310-9956-ffa450edef68