WyzAnt is a great initiative that helps students to find a private instructor. But when you’ve graduated, you might of course be considering to remove your account. In that case: I can tell you that all it takes, is 1 email to their info email addres.
I’ll show you below the one single thing you need to do to delete yourself from their website and their answer to it (with screenshots):
1 Write an email to email@example.com
Your mail could be looking like this: (you can copy/paste it if you want to)
Subject: Request to delete my account & personal data
In my case, I received an answer from a very kind customer support employee a few hours later, confirming me that my account has been closed.
Source (& thanks to): wyzant.com