Remove all the old broken-browser work-arounds based

on evidence that these browsers don't exist in the
wild.

I'm not completely confident about this, but we
will at least have a beta cycle to check this
before a release.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/simple-conf@160298 13f79535-47bb-0310-9956-ffa450edef68