Delete CPS IR

tests/compiler/dart2js/analyze_test_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 dart2js.analyze_test.test;
 
 import 'dart:io';
 
 import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/apiimpl.dart' show
@@ skipping 20 matching lines @@
       "'ForkableStream' declaration.",
   ],
 };
 
 const List<String> SKIP_LIST = const <String>[
   // Helper files:
   "/data/",
   "http_launch_data/",
   "mirrors_helper.dart",
   "path%20with%20spaces/",
-  "cps_ir/input/",
-  // No longer maintained:
-  "backend_dart/",
   // Broken tests:
   "quarantined/http_test.dart",
   // Package directory
   "packages/",
 ];
 
 main(List<String> arguments) {
   List<String> options = <String>[];
   List<Uri> uriList = <Uri>[];
   String filter;
@@ skipping 41 matching lines @@
         }
       }
     }
     await analyze(
         uriList,
         WHITE_LIST,
         mode: AnalysisMode.URI,
         options: options);
   });
 }