Delete a SharePoint User (You must be a Portal Administrator to remove Home users)
First, in the upper right-hand corner of the Home page, click Portal Administration:
2. Choose “Manage Portal Users”
3. Choose the icon with the “negative sign”
4. Check the box next to the name for the user you are deleting
5. Click “Delete”
6. Click ”Ok” to confirm the deletion.
The user has now been deleted.
Step-by-Step Video: Delete User