Remove ResolutionEnqueuer.isLive

tests/compiler/dart2js/cpa_inference_test.dart

 // Copyright (c) 2012, 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.
 
 import 'dart:async';
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 import 'package:compiler/implementation/types/types.dart';
 import 'package:compiler/implementation/inferrer/concrete_types_inferrer.dart';
 
@@ skipping 1441 matching lines @@
     result.checkNodeHasType('eNull', maybe(expectedEType));
     final expectedFType = [result.double];
     result.checkNodeHasType('f', expectedFType);
     result.checkNodeHasType('fNull', maybe(expectedFType));
     final expectedGType = [result.num];
     result.checkNodeHasType('g', expectedGType);
     result.checkNodeHasType('gNull', maybe(expectedGType));
     final expectedType = [result.bool];
     result.checkNodeHasType('h', expectedType);
     result.checkNodeHasType('hNull', maybe(expectedType));
-    final expectedIType = [result.base('A'), result.base('B'),
-                           result.base('BB'), result.base('C'),
+    final expectedIType = [result.base('B'),
+                           result.base('BB'),
+                           result.base('C'),
                            result.base('D')];
     result.checkNodeHasType('i', expectedIType);
     result.checkNodeHasType('iNull', maybe(expectedIType));
   });
 }
 
 testJsCallAugmentsSeenClasses() {
   final String source1 = """
     main () {
       var x = $DYNAMIC.truncate();
@@ skipping 660 matching lines @@
     testClosures10,
     testClosures11,
     testClosures12,
     testRefinement,
     testDefaultArguments,
     testSuperConstructorCall,
     testSuperConstructorCall2,
     testSuperConstructorCall3,
   ], (f) => f()));
 }