Well you must be using the downloaded version so this is a simple fix ...    

How do I cancel or undo an amended return in the TurboTax CD/Download software?

If you started amending your federal return by accident and would like to cancel the amendment, follow this process to correctly "unamend" your federal return:

1. Open your return.
2. Switch to Forms Mode (Windows instructions | Mac instructions).
3. In the left pane, select Form 1040X.
   • Windows: After the form is generated in the right pane, click the Delete Form button at the bottom of the window.
   • Mac: From the Forms menu, select Remove Form 1040X.
4. Follow the on-screen instructions to remove the 1040X from your return