Remove non-HTTP drop methods from cmCTestSubmitHandler
Recent improvements to
HTTPHEADER, initializing a CDash buildid upon submission time, and automatically marking a build as Done. All of these features are only supported when submitting over http and https.
CDash is the only maintained testing dashboard for CTest, and it only supports submissions over http and https. Therefore, I believe that the following methods are not used in practice and they can be safely removed: