How can I completely remove TFS Bindings
Solution 1:
File -> Source Control -> Advanced -> Change Source Control and then unbind and/or disconnect all projects and the solution.
This should remove all bindings from the solution and project files. (After this you can switch the SCC provider in Tools -> Options -> Source Control -> Plug-in Selection).
The SCC specification prescribes that all SCC providers should implement this behavior. (I only tested it for VSS, TFS and AnkhSVN)
Solution 2:
I have no File -> Source Control menu in Visual Studio because I've never used TFS with this installation of Visual Studio.
My problem was I was opening a solution from the internet and the original author had forgotten to remove the TFS bindings, so every time I open the solution I'd get an annoying popup saying
"Go Offline
The Team Foundation Server http://some-other-guys-tfs-server/
is currently unavailable.
The solution will be opened offline."
To get rid of this, I deleted the .suo next to the .sln file, and then opened the .sln file in Notepad and deleted this entire section:
GlobalSection(TeamFoundationVersionControl) = preSolution
SccNumberOfProjects = 2
SccEnterpriseProvider = {xxxxx}
SccTeamFoundationServer = http://some-other-guys-tfs-server/
SccLocalPath0 = .
SccProjectUniqueName1 = xxDemo\\xxDemo.csproj
SccProjectName1 = xxDemo
SccLocalPath1 = xxDemo
EndGlobalSection
Save the .sln in Notepad and then open in Visual Studio, problem solved.
Update: Saveen Reddy has created a tool to do this. I haven't tried it though.