hide answers on entry list single page

/* hide answers on entry list single page */

add_filter( 'woocommerce_lottery_entry_list_columns', 'custom_remove_answers_and_ticketnumber_from_entry', 50);
function custom_remove_answers_and_ticketnumber_from_entry ( $columns ) {

    // unset(  $columns['ticket_number']);
    unset(  $columns['answer_id']);
    return $columns;

}