function plt_hide_media_file_organizer_menus() {
//Hide the "Media → Media File Organizer" menu.
remove_submenu_page('upload.php', 'media-file-organizer-relocation');
//Hide the "Settings → Media File Organizer" menu.
remove_submenu_page('options-general.php', 'media-file-organizer-relocation-settings');
}
add_action('admin_menu', 'plt_hide_media_file_organizer_menus', 11);