Remove Emoticons from WordPress

anti-emoticons.php

/* Clean up head section and improve performance by removing Emojicons  */
function disable_wp_emojicons() {

	// all actions related to emojis
	remove_action( 'admin_print_styles', 'print_emoji_styles' );
	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_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
	remove_filter( 'the_content_feed', 'wp_staticize_emoji' );
	remove_filter( 'comment_text_rss', 'wp_staticize_emoji' );

	// filter to remove TinyMCE emojis
	add_filter( 'tiny_mce_plugins', 'disable_emojicons_tinymce' );
	add_filter( 'emoji_svg_url', '__return_false' );
}

add_action( 'init', 'disable_wp_emojicons' );