Hi,

This is the default woocommerce functionality and our theme doesn’t influence.
When a product is on sale, both the regular price and sale price are displayed on the product page. The sale price is usually highlighted to grab the attention of the customer.

Further, if you want to provide some suggestions for the betterment of the Theme then please post your requests on the following Feature Requests thread:
https://xtemos.com/forums/topic/features-requests-2/

Best Regards.