Unregister any WordPress taxonomy

mu-unregister-taxonomies.php

<?php if (!defined('ABSPATH')) die('Restricted Area');


/*
* Plugin Name: Unregister Taxonomies
* Description: Properly disable any WordPress taxonomy.
* Version: 20160901
* Author: Aurélien Denis (Neticpro)
* Author URI: https://wpchannel.com/desactiver-taxonomie-type-de-contenu-personnalise/
*/


function wpc_unregister_job_listing_type() {
	unregister_taxonomy('job_listing_type'); // Specify the taxonomy to unregister
}
add_action('init', 'wpc_unregister_job_listing_type');