in the webassist/plugins/catalog/details.php file, delete the following line:
<span id="ProductRetailPrice" class="strike"><?php echo number_format($row_WADAProducts["ProductRetailPrice"], 2); ?></span> (Save <?php echo($WAGLOBAL_CurrencySymbol); ?><span id="ProductRetailPriceSave"><?php echo number_format(floatval($row_WADAProducts["ProductRetailPrice"]) - floatval($row_WADAProducts["ProductPrice"]), 2); ?></span>)</span>