If the Schedule C does not apply to you, you can simply remove it from the program.
In TurboTax online edition, here are the steps:
1. Sign into your account, select Take me to my return
2. On your left, Select Tax Tools / drop down menu
3. Select Tools
4. Under Other helpful links, choose Delete a form
5. Select Delete next to Schedule C and related worksheets and Continue with My Return to proceed