Question

I did not work for killmarnic in 2020

Your system is asking for info there is none

TurboTax may be prompting you for information carried from last year's return. If this is the case just delete anything related to Killmarnic.

It's easy to remove a W-2.

Open or continue your return.
Search for W-2 using the search in the upper right corner and then click the Jump to link in the search results.
This brings you to the Here's your W-2 info screen. Click the trash can icon next to the unwanted W-2 and then answer Yes on the following screen.