Removing Feeds, XML, Emojis, etc.

Hi Guys,

I have a text only site using GeneratePress and wanted to remove anything on the frontend to do with feeds, emojis, xml, oembed, etc, etc so it's as close to static as I can get. What I really want is the functionality of WP in a bare-bones html site, without using a static site generator. Is that even a thing?

Managed to scrape together the following from all over the place and frankly I don't know what I'm doing, if they're written correctly, or if they're all relevant. If someone with the know-how cares to elaborate and/or make it cohesive that would be fantastic.

I think it would make a nice resource for anyone else who's interested. There are plenty of sites with bits and pieces of these but I couldn't find one site with everything.

/* Disable XML RPC */
add_filter( 'xmlrpc_enabled', '__return_false' );

/* Disable all feeds and display a custom message instead of the RSS Feeds. */
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 );

/* Disable emojis */
function disable_emojis() {
 remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
 remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
 remove_action( 'wp_print_styles', 'print_emoji_styles' );
 remove_action( 'admin_print_styles', 'print_emoji_styles' ); 
 remove_filter( 'the_content_feed', 'wp_staticize_emoji' );
 remove_filter( 'comment_text_rss', 'wp_staticize_emoji' ); 
 remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
 add_filter( 'tiny_mce_plugins', 'disable_emojis_tinymce' );
 add_filter( 'wp_resource_hints', 'disable_emojis_remove_dns_prefetch', 10, 2 );
}
add_action( 'init', 'disable_emojis' );
/**
 * Filter function used to remove the tinymce emoji plugin.
 * 
 * u/param array $plugins 
 * u/return array Difference betwen the two arrays
 */
function disable_emojis_tinymce( $plugins ) {
 if ( is_array( $plugins ) ) {
 return array_diff( $plugins, array( 'wpemoji' ) );
 } else {
 return array();
 }
}

/**
 * Remove emoji CDN hostname from DNS prefetching hints.
 *
 * u/param array $urls URLs to print for resource hints.
 * u/param string $relation_type The relation type the URLs are printed for.
 * u/return array Difference betwen the two arrays.
 */
function disable_emojis_remove_dns_prefetch( $urls, $relation_type ) {
 if ( 'dns-prefetch' == $relation_type ) {
 /** This filter is documented in wp-includes/formatting.php */
 $emoji_svg_url = apply_filters( 'emoji_svg_url', 'https://s.w.org/images/core/emoji/2/svg/' );
$urls = array_diff( $urls, array( $emoji_svg_url ) );
 }
return $urls;
}

// Remove oembeds
function disable_embeds_code_init() {
 // Remove the REST API endpoint.
 remove_action( 'rest_api_init', 'wp_oembed_register_route' );
 // Turn off oEmbed auto discovery.
 add_filter( 'embed_oembed_discover', '__return_false' );
 // Don't filter oEmbed results.
 remove_filter( 'oembed_dataparse', 'wp_filter_oembed_result', 10 );
 // Remove oEmbed discovery links.
 remove_action( 'wp_head', 'wp_oembed_add_discovery_links' );
 // Remove oEmbed-specific JavaScript from the front-end and back-end.
 remove_action( 'wp_head', 'wp_oembed_add_host_js' );
 add_filter( 'tiny_mce_plugins', 'disable_embeds_tiny_mce_plugin' );
 // Remove all embeds rewrite rules.
 add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );
 // Remove filter of the oEmbed result before any HTTP requests are made.
 remove_filter( 'pre_oembed_result', 'wp_filter_pre_oembed_result', 10 );
}
add_action( 'init', 'disable_embeds_code_init', 9999 );
function disable_embeds_tiny_mce_plugin($plugins) {
    return array_diff($plugins, array('wpembed'));
}
function disable_embeds_rewrites($rules) {
    foreach($rules as $rule => $rewrite) {
        if(false !== strpos($rewrite, 'embed=true')) {
            unset($rules[$rule]);
        }
    }
    return $rules;
}

//Remove jQuery Migrate
function dequeue_jquery_migrate( $scripts ) {
    if ( ! is_admin() && ! empty( $scripts->registered['jquery'] ) ) {
        $scripts->registered['jquery']->deps = array_diff(
            $scripts->registered['jquery']->deps,
            [ 'jquery-migrate' ]
        );
    }
}
add_action( 'wp_default_scripts', 'dequeue_jquery_migrate' );

// Remove Meta Generator: <meta name="generator" content="WordPress x.x"/>
remove_action('wp_head', 'wp_generator');

// Remove the EditURI/RSD
remove_action ('wp_head', 'rsd_link');

// Remove page/post's short links
remove_action( 'wp_head', 'wp_shortlink_wp_head');

// Disable REST API link tag
remove_action('wp_head', 'rest_output_link_wp_head', 10);

// Disable REST API link in HTTP headers
remove_action('template_redirect', 'rest_output_link_header', 11, 0);