Eliminating a bunch-o-junk from the Win32 os.h header that now lives
  in apr or isn't used.  Please review closely (every symbol removed was
  grep't for, and no references were found.)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86598 13f79535-47bb-0310-9956-ffa450edef68