If you entered self-employment income in TurboTax, you would have generated a schedule C. You can delete that schedule to remove your self-employment reporting,
A simple way to delete forms in TurboTax online is to use the Tax Tools menu option, which is on your left menu bar when you are working in your program. Then, choose Tools and then Delete a form. Look for schedule C in the list of forms and delete it.
If you are working in the download TurboTax program, use the Forms Mode on your menu bar to bring up the form you want to delete, then choose the Delete Form option at the bottom of the form.