Removes the type argument `Type` from the classes `MatchContext` and
`TypeAnalyzerErrors`.
There is no change in functionality, since all these type arguments
were always being instantiated with the same type argument
(`SharedTypeView`).
Change-Id: I6a6a6964b17aa22c145975e457cbf301842e69a5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/469921
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
Paul Berry
6d345136a6