After you file

Did you have one last year?  It may have transferred over and is waiting for you to fill it in.

Try deleting it this way.  Go to the K-1 interview section here
Federal
Wages and Income
Then scroll way down to Business Items
Schedules K-1, Q - Click the Start or Update button

If the first screen says "Do you want to review Schedule K-1?". You have to answer yes and then click Update by  the Schedule K-1 type (LLC, S corp, trust). The next screen is the Summary screen listing all of the K-1 entered for that type of entity.  You can review, edit or delete it there.