add_filter( 'genesis_post_meta', 'sp_post_meta_filter' );
/**
 * Customize entry meta.
 *
 * @param string $post_meta Existing post meta.
 * @return Amended post meta.
 */
function sp_post_meta_filter( $post_meta ) {

	$post_meta = '[post_categories sep=" "]';

	return $post_meta;

}