Permanently Delete TFS Work Items Tool
Permanently remove one or more work items from the Team Foundation database for a team project collection using TFS API
You can configure setting for confirmation about bulk delete or single delete or both
You can double click on Work-Item to delete
Only support flat query and must be inside "My Queries Folder"
Run the tool as Administrator to be able to save settings to the XML file
This tool physically deletes work items from a Team Foundation Server, use it at your own risk
For source code, you can visit the project on CodePlex