如何删除Seperate tags with commas 和Choose from the most used tags 从我的自定义分类法？这些：

我目前的注册是：

$labels = array(\'name\' => \'Company\', 
    \'popular_items\' => NULL);
register_taxonomy(\'test_company\', \'testimonials\', 
    array(\'show_tagcloud\' => false, 
        \'hierarchical\' => false, 
        \'labels\' => $labels, 
        \'query_var\' => true, 
        \'show_in_menu\' => false));