We would love to show you how to get rid of it or remove it out of your site completely.
You can simply follow these steps:
Search for file file salesbox-common.liquid, if having please delete this file
Remove block {% include "salesbox-common" %} from templates/product.liquid
Remove block {% include "salesbox-common" %} from templates/product.liquid
If it’s too hard for you, don’t be hesitate, please contact to us for helping you remove the code via live chat, or email us at support@fireapps.io
I hope this might be helpful for you and cleared your concern completely.