I placed a console log on this, seems to be not used anymore?

/**
 * Update the .cart_totals div with a string of html.
 *
 * @param {String} html_str The HTML string with which to replace the div.
 */
var update_cart_totals_div = function( html_str ) {
    $( '.cart_totals' ).replaceWith( html_str );
    $( document.body ).trigger( 'updated_cart_totals' );
    console.log('cart total update')
};