Migrate the language tests up to arithmetic_test.

tests/language_strong/abstract_factory_constructor_test.dart

Index: tests/language_strong/abstract_factory_constructor_test.dart
diff --git a/tests/language_strong/abstract_factory_constructor_test.dart b/tests/language_strong/abstract_factory_constructor_test.dart
deleted file mode 100644
index dd2a962fa0f62df0e8717eea89bfc06fdf58d4bb..0000000000000000000000000000000000000000
--- a/tests/language_strong/abstract_factory_constructor_test.dart
+++ /dev/null
@@ -1,31 +0,0 @@
-// 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.
-// Dart test program for constructors and initializers.
-
-// Exercises issue 2282, factory constructors in abstract classes should
-// not emit a static type warning
-
-class B extends A1 {
-  B() {}
-  method() {}
-}
-
-abstract class A1 {
-  A1() {}
-  method(); // Abstract.
-  factory A1.make() {
-    return new B();
-  }
-}
-
-class A2 {
-  // Intentionally abstract method.
-  method(); // //# 00: static type warning
-  A2.make() {}
-}
-
-main() {
-  new A1.make();
-  new A2.make(); //             //# 00: continued
-}