I'm not sure why you would have this message if you have no S-corp, but look for a "1120S Schedule K-1" in the forms list using the instructions below and see if you can delete it:
Here's the general procedure for deleting unwanted forms, schedules, and worksheets in TurboTax Online:
- Open your return in TurboTax. (To do this, sign in to TurboTax, and select the Take me to my return button.)
- In the left side bar, select Tax Tools> Tools.
- In the pop-up window Tool Center, choose Delete a form.
- Select Delete next to the form/schedule/worksheet and follow the onscreen instructions.