how to delete unfile return?
If you have not registered, paid or e-filed you can clear and start over
CLEAR AND START OVER
https://ttlc.intuit.com/turbotax-support/en-us/help-article/change-service-level/clear-start-turbotax-online/L37BZFuBV_US_en_US?uid=m6b26ost
To delete any stored data and clear your return information see the links below for additional information
How to delete your data
How do I clear and start over?