<!DOCTYPE html>
<html <?php language_attributes( 'html' ) ?>>
<head>
<title><?php wp_title('-'); ?></title>

<!-- Dear SEO Experts: Please don't email me about SEO services. I will report it as spam. -->

<meta charset="<?php bloginfo( 'charset' ); ?/>" />
...

I doubt this will work, but the effort required to edit header.php was small.[mnf]I guess this assumes that I don’t minify my HTML, too.[/mfn]