The `remove_submenu_page()` function in WordPress allows you to remove a specific submenu item from the administrator dashboard by removing its link from the parent menu's submenu array
The `remove_user_from_blog()` function in WordPress allows removing a user from a blog by providing the user ID, blog ID, and optional reassign user ID
This article explains how to use the WordPress'register_uninstall_hook()' function to set an uninstallation hook for a plugin, which can perform specific actions during the uninstallation process