Learn how to delete your account, and what happens once it is deleted
Deleting Your Account
Click on your profile image in the upper right-hand corner of the Project page, then select Settings.
Next, click on Account in the left sidebar.
Scroll to the bottom to find the option to Delete your account. You'll be prompted once to confirm your choice.
NOTE: When you delete your account your profile and projects will be permanently deleted. However, any contributions or comments made on projects owned by other accounts will still be accessible to its users.