add_action('get_header', 'wpsites_remove_header');
/**
* @author Brad Dalton - WP Sites
* @example http://wpsites.net/web-design/remove-header/
*/
function wpsites_remove_header() {
if (is_singular('post') ) {
remove_action( 'genesis_header', 'genesis_do_header' );
}
}