Code hijack from Genesis Framework functions/header.php genesis_do_header function.

custom_header.php

<?php //ditch this entire line

remove_action( 'genesis_header', 'genesis_do_header' );
remove_action( 'genesis_header', 'brainfartin_do_header' );

function brainfartin_do_header() {

	global $wp_registered_sidebars;

	genesis_markup( array(
		'html5'   => '<div %s>',
		'xhtml'   => '<div id="title-area">',
		'context' => 'title-area',
	) );
	do_action( 'genesis_site_title' );
	do_action( 'genesis_site_description' );
	echo '</div>';

	if ( ( isset( $wp_registered_sidebars['header-right'] ) && is_active_sidebar( 'header-right' ) ) || has_action( 'genesis_header_right' ) ) {
		genesis_markup( array(
			'html5'   => '<aside %s>',
			'xhtml'   => '<div class="widget-area header-widget-area">',
			'context' => 'header-widget-area',
		) );

			// do_action( 'genesis_header_right' );
			add_filter( 'wp_nav_menu_args', 'genesis_header_menu_args' );
			add_filter( 'wp_nav_menu', 'genesis_header_menu_wrap' );
			dynamic_sidebar( 'header-right' );
			remove_filter( 'wp_nav_menu_args', 'genesis_header_menu_args' );
			remove_filter( 'wp_nav_menu', 'genesis_header_menu_wrap' );
			
			add_action( 'portable_social_nav' );

		genesis_markup( array(
			'html5' => '</aside>',
			'xhtml' => '</div>',
		) );
	}

}