Disable RSS Feeds

function dr_disable_feeds() {
    wp_die( 'RSS feeds are disabled.' );
}

add_action( 'do_feed', 'dr_disable_feeds', 1 );
add_action( 'do_feed_rdf', 'dr_disable_feeds', 1 );
add_action( 'do_feed_rss', 'dr_disable_feeds', 1 );
add_action( 'do_feed_rss2', 'dr_disable_feeds', 1 );
add_action( 'do_feed_atom', 'dr_disable_feeds', 1 );