I have never participated in any of these DNA sites but I have an aunt that pretty much put in our full family tree. Is there anything I can do to remove myself without making an account?
You can requires all your data to be deleted and tastiest none is added.
This deletes the "family tree" to be seen by everyone
https://oag.ca.gov/news/press-releases/attorney-general-bont...
However, that's 2 big if's: Are they still operating normally, and do they consider "your data" data you upload or genetic data pertaining to you.