function plt_hide_wp_copysafe_video_menus() {
//Hide the "CopySafe Video" menu.
remove_menu_page('wpcsv_list');
//Hide the "CopySafe Video → List Files" menu.
remove_submenu_page('wpcsv_list', 'wpcsv_list');
//Hide the "CopySafe Video → Settings" menu.
remove_submenu_page('wpcsv_list', 'wpcsv_settings');
}
add_action('admin_menu', 'plt_hide_wp_copysafe_video_menus', 21);