Disable Feed and Remove wp-emoji-release.min.js

/**
 * Disable the RSS/Feed
 * Redirect to the homepage all users trying to access feeds.
 */
function disable_feeds() {
    wp_redirect( home_url() );
    die;
}

// Disable global RSS, RDF & Atom feeds.
add_action( 'do_feed',      'disable_feeds', -1 );
add_action( 'do_feed_rdf',  'disable_feeds', -1 );
add_action( 'do_feed_rss',  'disable_feeds', -1 );
add_action( 'do_feed_rss2', 'disable_feeds', -1 );
add_action( 'do_feed_atom', 'disable_feeds', -1 );

// Disable comment feeds.
add_action( 'do_feed_rss2_comments', 'disable_feeds', -1 );
add_action( 'do_feed_atom_comments', 'disable_feeds', -1 );

// Prevent feed links from being inserted in the <head> of the page.
add_action( 'feed_links_show_posts_feed',    '__return_false', -1 );
add_action( 'feed_links_show_comments_feed', '__return_false', -1 );
remove_action( 'wp_head', 'feed_links',       2 );
remove_action( 'wp_head', 'feed_links_extra', 3 );

/**
 * Disable the emoji's
 */
function disable_emoji_feature() {

    // Prevent Emoji from loading on the front-end
    remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
    remove_action( 'wp_print_styles', 'print_emoji_styles' );

    // Remove from admin area also
    remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
    remove_action( 'admin_print_styles', 'print_emoji_styles' );

    // Remove from RSS feeds also
    remove_filter( 'the_content_feed', 'wp_staticize_emoji');
    remove_filter( 'comment_text_rss', 'wp_staticize_emoji');

    // Remove from Embeds
    remove_filter( 'embed_head', 'print_emoji_detection_script' );

    // Remove from emails
    remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );

    // Disable from TinyMCE editor. Currently disabled in block editor by default
    add_filter( 'tiny_mce_plugins', 'disable_emojis_tinymce' );

    /** Finally, prevent character conversion too
         ** without this, emojis still work
         ** if it is available on the user's device
     */

    add_filter( 'option_use_smilies', '__return_false' );

}

function disable_emojis_tinymce( $plugins ) {
    if( is_array($plugins) ) {
        $plugins = array_diff( $plugins, array( 'wpemoji' ) );
    }
    return $plugins;
}

add_action('init', 'disable_emoji_feature');