If you have any type of self-employment income, you do need to use a Schedule C to file your taxes so you would still need to use the self-employed version of TurboTax. If you need to file a tax return, you must include income from all sources, including self-employment, on your return. Even if your expenses do not result in a better situation, you still must include the income (and expenses).
If you do not have any self-employment income you can use the clear and start over feature on the left hand side of your screen by clicking Tax Tools>>Clear and Start Over.