Pre 2.8.4

git-svn-id: https://plugins.svn.wordpress.org/wp-to-twitter/trunk@870849 b8457f37-d9ea-0310-8a92-e5e31aec5664
Remove long-unused image

git-svn-id: https://plugins.svn.wordpress.org/wp-to-twitter/trunk@870850 b8457f37-d9ea-0310-8a92-e5e31aec5664