function plt_hide_katracker_menus() {
//Hide the "Settings → KaTracker" menu.
remove_submenu_page('options-general.php', 'katracker');
//Hide the "Media → Torrents" menu.
remove_submenu_page('upload.php', 'admin-torrents');
//Hide the "Media → Categories" menu.
remove_submenu_page('upload.php', 'edit-tags.php?taxonomy=torrent-category&post_type=attachment');
}
add_action('admin_menu', 'plt_hide_katracker_menus', 11);