Rollback pkg/analyzer that breaks code_transformers

pkg/analyzer/lib/src/generated/java_core.dart

Index: pkg/analyzer/lib/src/generated/java_core.dart
diff --git a/pkg/analyzer/lib/src/generated/java_core.dart b/pkg/analyzer/lib/src/generated/java_core.dart
index 6025d08eb8b9f8f3db00dc4a34bd3ff23dc32e73..a6282ebbb1878ccced9b2e992db7c6650cf3eb27 100644
--- a/pkg/analyzer/lib/src/generated/java_core.dart
+++ b/pkg/analyzer/lib/src/generated/java_core.dart
@@ -421,7 +421,7 @@ abstract class Enum<E extends Enum> implements Comparable<E> {
   final String name;
   /// The position in the enum declaration.
   final int ordinal;
-  const Enum(this.name, this.ordinal);
+  Enum(this.name, this.ordinal);
   int get hashCode => ordinal;
   String toString() => name;
   int compareTo(E other) => ordinal - other.ordinal;