single-portfolio.php

<?php

// Remove post info
remove_action( 'genesis_entry_header', 'genesis_post_info', 5 );

// Remove entry meta from entry footer incl. markup
remove_action( 'genesis_entry_footer', 'genesis_entry_footer_markup_open', 5 );
remove_action( 'genesis_entry_footer', 'genesis_entry_footer_markup_close', 15 );
remove_action( 'genesis_entry_footer', 'genesis_post_meta' );

genesis();