Cleaned up the misc directory and busted the following

Cleaned up the misc directory and busted the following
files (as proposed some weeks ago):
    misc/custom_errordocs.html
    misc/descriptors.html
    misc/fin_wait_2.html
    misc/known_client_problems.html
    misc/tutorials.html
    images/custom_errordocs.gif

The correspondig links were also removed. What remains
are the Japanese docs:

    urlmapping.xml.ja
    mod/mod_include.xml.ja
    vhosts/fd-limits.xml.ja
    env.xml.ja
    sitemap.xml.ja

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@98874 13f79535-47bb-0310-9956-ffa450edef68