Get rid of promotedType=none annotations

pkg/front_end/testcases/inference/future_union_async_conditional.dart

Index: pkg/front_end/testcases/inference/future_union_async_conditional.dart
diff --git a/pkg/front_end/testcases/inference/future_union_async_conditional.dart b/pkg/front_end/testcases/inference/future_union_async_conditional.dart
index 9f54a43390e9d47567f846aaadab5ae98105eafe..ee6e6a82e206cf465de59c469f4f04dc2be48168 100644
--- a/pkg/front_end/testcases/inference/future_union_async_conditional.dart
+++ b/pkg/front_end/testcases/inference/future_union_async_conditional.dart
@@ -15,18 +15,16 @@ class MyFuture<T> implements Future<T> {
 }
 
 Future<int> g1(bool x) async {
-  return /*info:DOWN_CAST_COMPOSITE*/ /*@promotedType=none*/ x
+  return /*info:DOWN_CAST_COMPOSITE*/ x
       ? 42
       : new /*@typeArgs=int*/ Future.value(42);
 }
 
 Future<int> g2(bool x) async =>
-    /*info:DOWN_CAST_COMPOSITE*/ /*@promotedType=none*/ x
+    /*info:DOWN_CAST_COMPOSITE*/ x
         ? 42
         : new /*@typeArgs=int*/ Future.value(42);
 Future<int> g3(bool x) async {
-  var /*@type=Object*/ y = /*@promotedType=none*/ x
-      ? 42
-      : new /*@typeArgs=dynamic*/ Future.value(42);
-  return /*info:DOWN_CAST_COMPOSITE*/ /*@promotedType=none*/ y;
+  var /*@type=Object*/ y = x ? 42 : new /*@typeArgs=dynamic*/ Future.value(42);
+  return /*info:DOWN_CAST_COMPOSITE*/ y;
 }