We have a trunk in TFS that everyone works off until we have a need to branch. Our last project was a large feature that required a branch. Now that the development has been com
Just leave it. :) You can delete the branch but it will still remain in the repository. It really is a decision that you and your team can make to follow your source control guidelines.
On a side note, there is no read-only option in TFS, you can only leave it, delete it or run the TFS destroy command to permanently remove the branch.