How to remove CPT comment feed from head?

Following command hides comments feed for posts (WP 4.4+ required!), but custom pages still have comments feed displayed, even if comments are disabled for such page:

add_filter( 'feed_links_show_comments_feed', '__return_false' );

To resolve this, I had to add this addidtional code too:

function remove_comments_rss( $for_comments ) {
    return;
}
add_filter('post_comments_feed_link','remove_comments_rss');