As long as you have
not already registered, filed or paid
for your return, you can delete schedule C from your return. See this Turbo Tax FAQ to see how to delete a form: https://ttlc.intuit.com/replies/3288508
Or, use this Turbo Tax FAQ to delete a schedule C carried over from last year's return:
https://ttlc.intuit.com/replies/3300011
