"How do I delete 1st EIN?"
You can not "delete" your first EIN but you can follow the IRS procedure (link below) to close your account.
https://www.irs.gov/businesses/small-businesses-self-employed/canceling-an-ein-closing-your-account
You will also need to use TurboTax Business to prepare and file a 1041 for the estate; TurboTax Home & Business is only capable of preparing income tax returns for individuals, not entities such as an estate.
See https://turbotax.intuit.com/small-business-taxes/
