remove warning:

mod_remoteip.c:404:38: warning: data argument not used by format string [-Wformat-extra-args]
It's a hack, but maintain the orig hack ;)

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1407459 13f79535-47bb-0310-9956-ffa450edef68