How do I remove a taxonomy phathaiantoan.com.vn (ok)

https://stackoverflow.com/questions/4249694/how-do-i-remove-a-taxonomy-from-wordpress

Cách 1: (dùng sạch hơn)
function ev_unregister_taxonomy()
{
  global $wp_taxonomies;
  unset($wp_taxonomies["post_tag"]); 
  // register_taxonomy('post_tag', array());
}
add_action('init', 'ev_unregister_taxonomy');
Cách 2:
function ev_unregister_taxonomy(){
    register_taxonomy('post_tag', array());
}
add_action('init', 'ev_unregister_taxonomy');