remove a project from a team

Hi, here is the situation : I have created a team (that means I am the owner), one of the administrator has associated a project that I don't like, so I wanna to remove that project
 I wanna to keep https://edge.launchpad.net/drafting-project and remove  https://edge.launchpad.net/tn-drafting-project
 because it's a redondancy
thanks for your understanding :)