clean_wp_head.php

<?php 
/* =Clean up the WordPress head
------------------------------------------------- */

    // remove header links
    add_action('init', 'tjnz_head_cleanup');
    function tjnz_head_cleanup() {
        remove_action( 'wp_head', 'feed_links_extra', 3 );                      // Category Feeds
        remove_action( 'wp_head', 'feed_links', 2 );                            // Post and Comment Feeds
        remove_action( 'wp_head', 'rsd_link' );                                 // EditURI link
        remove_action( 'wp_head', 'wlwmanifest_link' );                         // Windows Live Writer
        remove_action( 'wp_head', 'index_rel_link' );                           // index link
        remove_action( 'wp_head', 'parent_post_rel_link', 10, 0 );              // previous link
        remove_action( 'wp_head', 'start_post_rel_link', 10, 0 );               // start link
        remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0 );   // Links for Adjacent Posts
        remove_action( 'wp_head', 'wp_generator' );                             // WP version
        if (!is_admin()) {
            wp_deregister_script('jquery');                                     // De-Register jQuery
            wp_register_script('jquery', '', '', '', true);                     // Register as 'empty', because we manually insert our script in header.php
        }
    }

    // remove WP version from RSS
    add_filter('the_generator', 'tjnz_rss_version');
    function tjnz_rss_version() { return ''; }