How do I remove a taxonomy from Wordpress?

Question

I\'m creating different custom post types and taxonomies and I want to remove the \'Post Tags\' taxonomy from the default \'Posts\' post type. How do I go about doing this?

Answer 1

Total unregister and remove (minimal PHP version 5.4!)

add_action('init', function(){
        global $wp_taxonomies;
        unregister_taxonomy_for_object_type( 'category', 'post' );
        unregister_taxonomy_for_object_type( 'post_tag', 'post' );
        if ( taxonomy_exists( 'category'))
            unset( $wp_taxonomies['category']);
        if ( taxonomy_exists( 'post_tag'))
            unset( $wp_taxonomies['post_tag']);
        unregister_taxonomy('category');
        unregister_taxonomy('post_tag');
    });