Did you add Assist & Review to your return? Unfortunately, once you have upgraded or added features to your TurboTax return, there is no way to downgrade or remove the extra features. You would need to create a new return to go back to the original product.
To start a new return, select “Start a New Return” from under “My Returns”. Once you have started your new return, you can select “View All Returns” from under “My Accounts & Returns”, and delete the unwanted return by clicking the small Trash Can next to it (or click “Delete” under the return name).