Functions to disable all WordPress emoji. No more smiling faces :)

disable-wp-emoji.php

<?php
/**
 * Kill all emojis
 * ===============
 * See: http://wordpress.stackexchange.com/a/185578
 */
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_action( 'init', 'disable_emojis' );

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