Get your taxes done using TurboTax

Delete form 1040X.  This should put it back to your original return.  Are you using the online version or the desktop version?  Doing this with the desktop version, you can go to forms mode and just delete the form 1040X.  When you save (save first with a different name) and then delete.  

When you say you saved did you save as a .tax file or a pdf?

If you are using the online version, you can delete the 1040x following these instructions

1. From the left rail menu in TurboTax Online, select Tax Tools (You may have to scroll down on the left rail menu.)
2. On the drop-down select Tools
3. On the Pop-Up menu titled “Tools Center,” select Delete a Form 
4. This will show all of the forms in your return
5. Scroll down to the form you want to delete
6. Select the Form
7. Click on Delete. 

Always use extreme caution when deleting information from your tax return.  There could be unintended consequences.