Remove Genesis Author Box Conditionally https://wpsites.net/web-design/remove-genesis-author-box-from-all-posts-in-one-or-more-categories/

functions.php

add_action( 'get_header', 'remove_authorbox_conditionally' );
/**
 * @author    Brad Dalton
 * @link   https://wpsites.net/web-design/remove-genesis-author-box-from-all-posts-in-one-or-more-categories/
 */
function remove_authorbox_conditionally(){
	if( in_category('category-slug') || in_category('category-slug') ) {
        remove_action( 'genesis_after_entry', 'genesis_do_author_box_single', 8 );
	}
}