If you have not filed, you can simply remove the form. Here are the steps (desktop):
- Open up your tax return if you have not already done so.
- At the right upper corner, select Forms
- To your left, you would see a list of all the tax forms and worksheets, scroll down and select Form 1065 Schedule K-1
- While the Schedule K-1 appears, at the bottom of the screen, select Delete Form.