Remove toplevel inference restriction hints, and restore as much

pkg/analyzer/test/src/summary/resynthesize_ast_test.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.test.src.summary.resynthesize_ast_test;
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 46 matching lines @@
 class ResynthesizeAstStrongTest extends _ResynthesizeAstTest {
   @override
   bool get isStrongMode => true;
 
   @override
   AnalysisOptionsImpl createOptions() =>
       super.createOptions()..strongMode = true;
 
   @override
   @failingTest
-  test_const_invokeConstructor_generic_noTypeArguments() async {
-    await super.test_const_invokeConstructor_generic_noTypeArguments();
-  }
-
-  @override
-  @failingTest
-  test_instantiateToBounds_boundRefersToItself() async {
-    await super.test_instantiateToBounds_boundRefersToItself();
-  }
-
-  @override
-  @failingTest
   test_syntheticFunctionType_genericClosure() async {
     await super.test_syntheticFunctionType_genericClosure();
   }
 
   @override
   @failingTest
   test_syntheticFunctionType_inGenericClass() async {
     await super.test_syntheticFunctionType_inGenericClass();
   }
 
@@ skipping 192 matching lines @@
 
   @override
   AnalysisOptionsImpl createOptions() =>
       super.createOptions()..strongMode = isStrongMode;
 
   @override
   TestSummaryResynthesizer encodeDecodeLibrarySource(Source source) {
     return _encodeLibrary(source);
   }
 }