How to config register page show optional?

[choltha (CT)]

Hi open edx I want setting register page show optional on load register page without having to click the checkbox

I edit file openedx/edx-platform/lms/static/js/student_account/views# vim RegisterView.js add “//” but not working

 //$('.optional-fields').addClass('hidden');
                    $('#toggle_optional_fields').change(function() {
                        window.analytics.track('edx.bi.user.register.optional_fields_selected');
                        //$('.optional-fields').toggleClass('hidden');
                    });