I tried to remove a contact of a friend since he has a new email address. Few times I mistakenly sent to his old email address. But I couldn’t found where to go about to remove the old email address.

After wandering around, I found this hidden link to contact to remove a friend’s contact.

Click on the “Contact” link

Search for a contact

Click on the More > Delete contact

You are done removing a contact in your contact list.