clean out old files

git-svn-id: https://plugins.svn.wordpress.org/cf-whiteboard/trunk@948556 b8457f37-d9ea-0310-8a92-e5e31aec5664
v2.4.2 files -- mostly compatibility improvements

git-svn-id: https://plugins.svn.wordpress.org/cf-whiteboard/trunk@948558 b8457f37-d9ea-0310-8a92-e5e31aec5664