How to remove your Code Academy account
From their FAQ: (http://help.codecademy.com/customer/portal/articles/416872)
If you still want to delete your account, please contact us through the link on the right with the email address associated with your account. For security reasons, we will need to verify that these requests have come from the email address that’s on your Codecademy account. Please also note that once your account is removed we will not be able to retrieve it.
Helpful Trick: Removing online data
Helpful Trick: Remove third-party logins
If you signed up for Code Academy using a third-party login such as Facebook or Twitter, you probably want to revoke all access from Code Academy. Click here to find out how.