Remove the various header elements on your site using the Genesis Framework.

functions.php

<?php
//* Remove the Header
remove_action( 'genesis_header', 'genesis_do_header' );

//* Remove the site title
remove_action( 'genesis_site_title', 'genesis_seo_site_title' );
 
//* Remove the site description
remove_action( 'genesis_site_description', 'genesis_seo_site_description' );
 
//* Remove the header right widget area
unregister_sidebar( 'header-right' );