Revert "Accept version constraints in the GetUpdates method."

This reverts commit fd304b69a9bdaa44b28eba9d0b1febbc8ba98b31.

Conflicts:
	Website/DataServices/V2Feed.svc.cs
Revert "Add unit tests."

This reverts commit 07eb3fc8c1495f0d7641d54e19a874d9694e6a8e.

Conflicts:
	Website/DataServices/V2Feed.svc.cs
Fixed unit test failure