You can create your own invoice template and not include the Balance Due in the form since the option to remove the balance due is unavailable. I'd recommend using this article as your guide when designing your own form style.
Once done, import it to QuickBooks by following these steps:
Go to Gear icon.
Select QuickBooks Labs under Your Company.
Turn on Import Style. Then, Done.
Within the Custom form style section, click the New style drop-down arrow.