If you're using MAP pricing then you're probably requiring customers to add-to-cart to see the price, so therefore you don't want the discounts box to show at all;
therefore, you can cause it to no longer display by editing:
/includes/templates/YOUR_TEMPLATE_DIRECTORY/templates/tpl_product_info_display.php
You could remove the entire following section of code, or you could just make the change in red:
Code:<!--bof Quantity Discounts table -->
<?php
if (false && $products_discount_type != 0) { ?>
<?php
/**
* display the products quantity discount
*/
require($template->get_template_dir('/tpl_modules_products_quantity_discounts.php',DIR_WS_TEMPLATE, $current_page_base,'templates'). '/tpl_modules_products_quantity_discounts.php'); ?>
<?php
}
?>
<!--eof Quantity Discounts table -->