Can you completely undo self employment information on return for current if used in the past?

Yes. You can delete your Schedule C if it rolled over from the previous year and you are no longer self-employed.

To delete a Schedule C from your return, please follow the instructions below:

1. Open your return in TurboTax.
2. Search for Schedule C with the magnifying glass tool on the top of the page.
3. Select the Jump to Schedule C link in the search results.
4. If you get to a self-employment summary screen, delete the self-employment income line with the trash can icon. 
5. If you get to the question Did you have any self-employment income or expenses? answer No. 
6. Click on Tax Tools.
7. Click on Tools.
8. Click on Delete a Form.
9. Scroll down and click Delete next to your Schedule C.