Reorganize the dart2js transformer tests.

sdk/lib/_internal/pub/test/build/ignores_non_entrypoint_dart_files_test.dart

Index: sdk/lib/_internal/pub/test/build/ignores_non_entrypoint_dart_files_test.dart
diff --git a/sdk/lib/_internal/pub/test/build/ignores_non_entrypoint_dart_files_test.dart b/sdk/lib/_internal/pub/test/build/ignores_non_entrypoint_dart_files_test.dart
deleted file mode 100644
index fea77a6b38419b6761effda7ec30bedc2dbe7ca7..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/test/build/ignores_non_entrypoint_dart_files_test.dart
+++ /dev/null
@@ -1,31 +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.
-
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-
-main() {
-  initConfig();
-
-  integration("ignores non-entrypoint Dart files", () {
-    d.dir(appPath, [
-      d.appPubspec(),
-      d.dir('web', [
-        d.file('file1.dart', 'var main = () => print("hello");'),
-        d.file('file2.dart', 'void main(arg1, arg2, arg3) => print("hello");'),
-        d.file('file3.dart', 'class Foo { void main() => print("hello"); }'),
-        d.file('file4.dart', 'var foo;')
-      ])
-    ]).create();
-
-    schedulePub(args: ["build"],
-        output: new RegExp(r'Built 0 files to "build".'));
-
-    d.dir(appPath, [
-      d.dir('build', [
-        d.nothing('web')
-      ])
-    ]).validate();
-  });
-}