header-url.php

<?php
//* Do NOT include the opening php tag

//* Modify the header URL
add_filter('genesis_seo_title', 'sp_seo_title', 10, 3);
function sp_seo_title($title, $inside, $wrap) {
	$inside = sprintf( '<a href="http://www.yourdomain.com" title="%s">%s</a>', esc_attr( get_bloginfo('name') ), get_bloginfo('name') );
	$title = sprintf('<%s id="title">%s</%s>', $wrap, $inside, $wrap);
	return $title;
}

remove-site-description.php

<?php
//* Do NOT include the opening php tag

//* Remove the site description
remove_action( 'genesis_site_description', 'genesis_seo_site_description' );

remove-site-title.php

<?php
//* Do NOT include the opening php tag

//* Remove the site title
remove_action( 'genesis_site_title', 'genesis_seo_site_title' );

remove-widget-area.php

<?php
//* Do NOT include the opening php tag

//* Remove the header right widget area
unregister_sidebar( 'header-right' );