Remove the setting of the status line from the cache in mod_disk_cache,

because this was causing 200s to be sent on responses that were really
304s
Submitted by: Kris Verbeeck <Kris.Verbeeck@ubizen.com>
Reviewed by:   Brian Pane


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@96803 13f79535-47bb-0310-9956-ffa450edef68