This post is to how can you delete a project from TFS ?
1) Open C:\Program Files\Microsoft Visual Studio 8\Common7\IDE Folder
2) Open command line and open this path .
3) on the command line write the following command :
TFSDeleteProject /server:YOUR_TFS_SERVER Project_Name
You must be connected to Team Foundation Server before using TFSDeleteProject.
Use TFSDeleteProject to delete a team project from Team System when the project is no longer needed on the Team Foundation Server.
When you run TFSDeleteProject, the system places the source control data in a deleted state in the operational store. It does not actually remove the data from the database, nor does it reclaim the disk space. Also, the system does not remove the warehouse data originating from the team project.
Hope this helps.