Remove references to stale bug

Change-Id: I445048f5366a27f2e9e57ef148f511f2aa4bbd3f
Reviewed-on: https://dart-review.googlesource.com/63146
Commit-Queue: Peter von der Ahé <ahe@google.com>
Reviewed-by: Aske Simon Christensen <askesc@google.com>
diff --git a/pkg/vm/bin/kernel_service.dart b/pkg/vm/bin/kernel_service.dart
index e3af637..704b7a8 100644
--- a/pkg/vm/bin/kernel_service.dart
+++ b/pkg/vm/bin/kernel_service.dart
@@ -109,7 +109,7 @@
           case Severity.error:
           case Severity.internalProblem:
             // TODO(sigmund): support emitting code with errors as long as they
-            // are handled in the generated code (issue #30194).
+            // are handled in the generated code.
             printMessage = false; // errors are printed by VM
             errors.add(message.formatted);
             break;