Removing "koimoi.png"

git-svn-id: https://plugins.svn.wordpress.org/koimoi-box-office/trunk@778728 b8457f37-d9ea-0310-8a92-e5e31aec5664
Importing koimoi.png

git-svn-id: https://plugins.svn.wordpress.org/koimoi-box-office/trunk@778729 b8457f37-d9ea-0310-8a92-e5e31aec5664