WordPress | Remove crap function

remove_crap.php

<?php
function remove_crap() {
    /**
    * This function removes redundant and unnecessary tags and scripts from
    * the head section of the site, a lot of this stuff is useful for blogs
    * but, generally, not utilised for a typical business website.
    * Whilst there is not necessarily a load-time advantage we might as well
    * keep the front-end tidy by removing everything we know is not required.
    * This function is hooked into the after_setup_theme hook,
    * which runs before the init hook.
    */

    // Disable REST API link tag
    // Allows interaction remotely by sending and receiving JSON objects.
    remove_action('wp_head', 'rest_output_link_wp_head', 10);

    // Disable oEmbed Discovery Links
    // Allows an embedded representation of a URL on third party sites
    remove_action('wp_head', 'wp_oembed_add_discovery_links', 10);

    // Remove the link to the Really Simple Discovery service endpoint
    // An XML format and publishing convention for making posts discoverable
    remove_action( 'wp_head', 'rsd_link' );

    // Removes the canonical url in the head
    // Would tell search engines that similar URLs are the same
    remove_action('wp_head', 'rel_canonical');

    // Removes the shortlink URL in head
    // Nothing but the shorter version of the post or page url
    remove_action('wp_head', 'wp_shortlink_wp_head', 10, 0);

    // Prevents display of the XHTML generator that is created at wp_head hook
    // Would make the WordPress version visible and public
    remove_action( 'wp_head', 'wp_generator' );

    // Removes link to info on how Windows Live Writer can talk to WordPress
    remove_action( 'wp_head', 'wlwmanifest_link' );

    // Disables Emoji following autmoatic inclusion in v4.2.
    remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
    remove_action( 'wp_print_styles', 'print_emoji_styles' );
}
add_action( 'after_setup_theme', 'remove_crap' );