Remove separate billing & shipping address?

<?php /** * @package HikaShop for Joomla! * @version 1.6.0 * @author hikashop.com * @copyright (C) 2010-2012 HIKARI SOFTWARE. All rights reserved. * @license GNU/GPLv3 http://www.gnu.org/licenses/gpl-3.0.html */ defined('_JEXEC') or die('Restricted access'); ?> <?php if($this->identified){ ?> <div <?php if($this->has_shipping){ echo 'id="hikashop_checkout_address" class="hikashop_checkout_address"'; }else{ echo 'id="hikashop_checkout_address_billing_only" class="hikashop_checkout_address_billing_only"'; } ?>> <div <?php if($this->has_shipping){ echo 'id="hikashop_checkout_address_left_part" class="hikashop_checkout_address_left_part"'; }else{ echo 'id="hikashop_checkout_billing_address" class="hikashop_checkout_billing_address"'; } ?>> <fieldset> <legend><?php echo JText::_('HIKASHOP_BILLING_ADDRESS');?></legend> <?php $this->type = 'billing'; echo $this->loadTemplate('view'); if($this->has_shipping){ ?> </fieldset> </div> <div id="hikashop_checkout_address_right_part" class="hikashop_checkout_address_right_part"> <fieldset> <?php $checked = ''; $style = ''; $override = false; if(!empty($this->currentShipping) && method_exists($this->currentShipping, 'getShippingAddress')) { $override = $this->currentShipping->getShippingAddress(); } if($override === false) { if($this->shipping_address==$this->billing_address){ $checked = 'checked="checked" '; $style = ' style="display:none"'; }?> <div class="hikashop_checkout_shipping_div" id="hikashop_checkout_shipping_div" <?php echo $style;?>> <?php $this->type = 'shipping'; echo $this->loadTemplate('view'); ?> </div> <?php } else { ?> <span class="hikashop_checkout_billing_address_info"><?php echo $override;?></span> <?php } } ?> </fieldset> </div> </div> <div style="clear:both"></div> <?php }else{ }