How do I remove the keys from the Github?

How do I remove the keys from the Github? I am using windows.
EDIT: I moved my repo from my enterprise account repo to public organization repo and I can no longer push my code to remote. I made sure that the remote URL is accurate. I followed suggestion from this post to remote the git hub keys but I don’t know how to check this. Thanks!

I edited my question to add more details. Thank you !