How to disable RSS feeds on WordPress

<?php
/**
 * Display a custom message instead of the RSS Feeds.
 *
 * @return void
 */
function wpcode_snippet_disable_feed() {
    wp_die(
        sprintf(
            // Translators: Placeholders for the homepage link.
            esc_html__('No feed available, please visit our %1$shomepage%2$s!'),
            ' <a href="' . esc_url(home_url('/')) . '">',
            '</a>'
        )
    );
}

// Replace all feeds with the message above
add_action('do_feed_rdf', 'wpcode_snippet_disable_feed', 1);
add_action('do_feed_rss', 'wpcode_snippet_disable_feed', 1);
add_action('do_feed_rss2', 'wpcode_snippet_disable_feed', 1);
add_action('do_feed_atom', 'wpcode_snippet_disable_feed', 1);
add_action('do_feed_rss2_comments', 'wpcode_snippet_disable_feed', 1);
add_action('do_feed_atom_comments', 'wpcode_snippet_disable_feed', 1);

// Remove links to feed from the header
remove_action('wp_head', 'feed_links_extra', 3);
remove_action('wp_head', 'feed_links', 2);