removed 2 folders. see readme.txt

git-svn-id: https://plugins.svn.wordpress.org/form-lightbox/trunk@810549 b8457f37-d9ea-0310-8a92-e5e31aec5664
Removing for updating

git-svn-id: https://plugins.svn.wordpress.org/form-lightbox/trunk@810550 b8457f37-d9ea-0310-8a92-e5e31aec5664