Removing a contact person is easy! To do this start from your team dashboard.
From here, you can check the box of the contact you want to delete and click on delete.
Or you can click on a team member and scroll down to the bottom of the page. Click on the red remove button to delete the user.
A pop-up will appear. Select remove.
If you only want to hide a contact from your profile but not delete its user, check out this article, LINK!