How to remove the WordPress emoji code In functions.php (your WordPress theme) Add the following lines
Resource: http://www.denisbouquet.com/remove-wordpress-emoji-code/
// REMOVE WP EMOJI to ensure CSS files are downloaded in parallel
remove_action('wp_head', 'print_emoji_detection_script', 7);
remove_action('wp_print_styles', 'print_emoji_styles');
remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
remove_action( 'admin_print_styles', 'print_emoji_styles' );