Remove "@informative" annotation on initializers and local functions.

pkg/analyzer/lib/src/summary/format.dart

Index: pkg/analyzer/lib/src/summary/format.dart
diff --git a/pkg/analyzer/lib/src/summary/format.dart b/pkg/analyzer/lib/src/summary/format.dart
index edaf034c49b28c8c654ac5260f6e6e06beb3e3ff..9179120d17a6ff97b23b1966828b6628f563217c 100644
--- a/pkg/analyzer/lib/src/summary/format.dart
+++ b/pkg/analyzer/lib/src/summary/format.dart
@@ -4603,7 +4603,7 @@ class UnlinkedExecutableBuilder extends Object with _UnlinkedExecutableMixin imp
     _codeRange = null;
     _constantInitializers?.forEach((b) => b.flushInformative());
     _documentationComment = null;
-    _localFunctions = null;
+    _localFunctions?.forEach((b) => b.flushInformative());
     _localLabels = null;
     _localVariables = null;
     _nameEnd = null;
@@ -8114,7 +8114,7 @@ class UnlinkedVariableBuilder extends Object with _UnlinkedVariableMixin impleme
     _codeRange = null;
     _constExpr?.flushInformative();
     _documentationComment = null;
-    _initializer = null;
+    _initializer?.flushInformative();
     _nameOffset = null;
     _type?.flushInformative();
   }