Approval emails even for User Activated Registrations

I have enabled user activation for account registration type under profile settings. Even on this setting where user activates with their activation code, admin still receives the email with Approve or Reject options. For user activated accounts, there is no need for admins to manually approve or reject and just a simple new user notification email should do. But Why are admins sent this approval email in this case? Is this how it's supposed to work?