9c9ee03755
Modifies the code generation logic that populates the `DiagnosticCode.uniqueName` field so that it doesn't include the diagnostic's class name. This paves the way for removing the last remenants of the diagnostic classes from the analyzer. Change-Id: I6a6a696453fe1f2bd8bd3cea00a9a496392fbf98 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/464240 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Paul Berry <paulberry@google.com>