Hi,
In our forum, we are providing free support only if there is a problem that caused by our templates. But what you are asking is "Custom" change.
Unfortunately we don't provide free support for custom changes. You need to purchase "premium support" through:
www.flexiblewebdesign.com/Premium-Support/Virtuemart-Premium-Support if you want us to take care those custom changes for you.
I can guide you to achieve this, but it is up to you to handle this change.
You need to go into PHP files and make some code changes.
To make code changes, the PHP files you need to make edits are these:
Category Page PHP file:
/templates/html/com_virtuemart/category/default.php
Product Details Page PHP file:
/templates/html/com_virtuemart/productdetails/default.php
In those files, find the PHP lines to generate the "discount amount" and the "percentage", try to disable the discount amount. You can alternatively use the help of CSS (something like <span style="display:none;"> to hide the discount amount).
Regards.
Support & Development