Revert "Update all Angular libs (run update_all.sh)."

third_party/pkg/di/lib/annotations.dart

Index: third_party/pkg/di/lib/annotations.dart
diff --git a/third_party/pkg/di/lib/annotations.dart b/third_party/pkg/di/lib/annotations.dart
index 539c43f6fee3fdb76c97783fe60e8f7739538ea5..0f77b3bc583c9c3a4b734fe1416005e08f5bae44 100644
--- a/third_party/pkg/di/lib/annotations.dart
+++ b/third_party/pkg/di/lib/annotations.dart
@@ -8,12 +8,4 @@ library di.annotations;
 class Injectables {
   final List<Type> types;
   const Injectables(this.types);
-}
-
-/**
- * Annotation that can be applied to a class for which type factories
- * should be generated to be used by StaticInjector.
- */
-class Injectable {
-  const Injectable();
-}
+}