Autodesk builds 3D design, engineering and entertainement software. But when you don’t need your account on their site anymore, you might be considering to close it. In that case: I can tell you that all it takes is a small email to the Privacy Team.
I’ll show you below the one step I’ve taken to remove myself from their site (and it figured out to work):
1 Send an email to firstname.lastname@example.org
Subject: Request to remove my account & data
Dear people of Autodesk,
I created an Autodesk account by mistake and would like to see it closed and my data removed. Can you do that for me please?
The email associated to the account is: [your email address]
Thanks in advance for confirming the removal
In my case, I received an email 2 hours later, asking to provide more information about the type of account that was created and if it was this tied to a particular product or service. All you need to to is reply on this question and they will close the account after they checked it.
Source (& thanks to): autodesk.com