Exclude Genesis Portfolio taxonomies on the portfolio archive

functions.php

<?php // omit this line from functions.php

add_filter( 'pre_get_posts', 'custom_remove_portfolio_taxonomy' );
function custom_remove_portfolio_taxonomy( $query ) {
	if ( is_post_type_archive( 'portfolio' ) && $query->is_main_query() ) {
		$tax_query = array(
			array(
				'taxonomy' => 'portfolio-type',
				'field' => 'slug',
				'terms' => array( 'type1', 'type2' ), // Change this to use the portfolio taxonomies you want to exclude.
				'operator'=> 'NOT IN'
			)
		);

		$query->set( 'tax_query', $tax_query );
	}

	return $query;
}