Revert "Take type arguments into account in interface type subtype check."

tests/compiler/dart2js/type_test_helper.dart

Index: tests/compiler/dart2js/type_test_helper.dart
diff --git a/tests/compiler/dart2js/type_test_helper.dart b/tests/compiler/dart2js/type_test_helper.dart
deleted file mode 100644
index 631faba9bfeae1518d2c9d4ac8f724ffbd6a77f0..0000000000000000000000000000000000000000
--- a/tests/compiler/dart2js/type_test_helper.dart
+++ /dev/null
@@ -1,55 +0,0 @@
-// Copyright (c) 2013, 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 type_test_helper;
-
-import "../../../sdk/lib/_internal/compiler/implementation/dart2jslib.dart";
-import '../../../sdk/lib/_internal/compiler/implementation/dart_types.dart';
-import "../../../sdk/lib/_internal/compiler/implementation/elements/elements.dart";
-import "../../../sdk/lib/_internal/compiler/implementation/tree/tree.dart";
-import "../../../sdk/lib/_internal/compiler/implementation/util/util.dart";
-import "compiler_helper.dart";
-import "dart:uri";
-
-InterfaceType instantiate(ClassElement element, List<DartType> arguments) {
-  return new InterfaceType(element, new Link<DartType>.fromList(arguments));
-}
-
-class TypeEnvironment {
-  final Compiler compiler;
-
-  factory TypeEnvironment(String source) {
-    var uri = new Uri.fromComponents(scheme: 'source');
-    Compiler compiler = compilerFor('''
-        main() {}
-        $source''',
-        uri);
-    compiler.runCompiler(uri);
-    return new TypeEnvironment._(compiler);
-  }
-
-  TypeEnvironment._(Compiler this.compiler);
-
-  Element getElement(String name) {
-    var element = findElement(compiler, name);
-    Expect.isNotNull(element);
-    if (identical(element.kind, ElementKind.CLASS)) {
-      element.ensureResolved(compiler);
-    }
-    return element;
-  }
-
-  DartType getElementType(String name) {
-    return getElement(name).computeType(compiler);
-  }
-
-  DartType operator[] (String name) {
-    if (name == 'dynamic') return compiler.types.dynamicType;
-    return getElementType(name);
-  }
-
-  bool isSubtype(DartType T, DartType S) {
-    return compiler.types.isSubtype(T, S);
-  }
-}