prout.php

<?php
/**
 * Tweaks & utils
 * Cleanup wp_head()
 * Use it in your function.php file (or inside a plugin)
 */

 /**
 * Clean the <link> tag output in the site header
 * Removing useless ID's
 */
add_filter('style_loader_tag', 'felain_clean_style');
function felain_clean_style( $input ) {
    preg_match_all("!<link rel='stylesheet'\s?(id='[^']+')?\s+href='(.*)' type='text/css' media='(.*)' />!", $input, $matches);
    // Only display media if it is meaningful
    $media = $matches[3][0] !== '' && $matches[3][0] !== 'all' ? ' media="' . $matches[3][0] . '"' : '';
    // Add a 4 spaces indent before <link...
    return '<link rel="stylesheet" href="' . $matches[2][0] . '"' . $media . '>' . "\n";
}

/**
 * Remove WP Emoji feature
 * Thanks WP for this crappy default thing -_-'
 *
*/
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' );

/**
 * Clean the header to remove what we don't need
 * RSD link, useless rss, etc...
 */
remove_action( 'wp_head', 'feed_links_extra', 3 );
remove_action( 'wp_head', 'feed_links', 2 );
remove_action( 'wp_head', 'rsd_link' );
remove_action( 'wp_head', 'wlwmanifest_link' );
remove_action( 'wp_head', 'index_rel_link' );
remove_action( 'wp_head', 'parent_post_rel_link', 10, 0 );
remove_action( 'wp_head', 'start_post_rel_link', 10, 0 );
remove_action( 'wp_head', 'adjacent_posts_rel_link', 10, 0 );