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 );