How can I remove one of my plugins from …

How can I remove one of my plugins from the WordPress Plugins Directory. I think I did something wrong, so I add my plugin twice. Here’s the plugin which needs to be deleted:

And another one question… How can I edit the description and add Installation, FAQ, etc… tabs on the pluginPlugin A plugin is a piece of software containing a group of functions that can be added to a WordPress website. They can extend functionality or add new features to your WordPress websites. WordPress plugins are written in the PHP programming language and integrate seamlessly with WordPress. These can be free in the Plugin Directory or can be cost-based plugin from a third-party’s page?