You can delete a user from your account.
Note: This will remove the user's data (including grades) from all courses and groups. This process cannot be undone.
Click the account title link.
Locate Search people on the sidebar. Type in the user's name [1].
After clicking, you will see the search results. Click the user's name.
After clicking on the delete link, you will be asked if you are sure you want to delete the user. If you are sure, click the Delete [User Name] button.
Note: This will remove the user's data (including grades) from all courses and groups. This process cannot be undone.