Merge r1345329 from trunk:

remove obsolete comment (PROXY_MAGIC_TYPE is not used anywhere anymore)

Submitted by: sf
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1364602 13f79535-47bb-0310-9956-ffa450edef68