Forward port 2.4.x change r1810016

Drops expat LICENSE since this is no longer bundled by apr-util
which is no longer bundled by httpd.

Note text was stale.




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1810017 13f79535-47bb-0310-9956-ffa450edef68