Cleaner please!

Wordpress LScache Plugin: Cleaner please!

The plugin created hundreds of files with different resolutions. We need to migrate the server but it is 13 GB and we realized all this is from this plugin. Is there any cleaner? We removed the plugin but didnt remove all these generated images. Thanks, Erich. if you have done image optimization it will create backup files you can either destroy/undo the image optimization or remove the original backups