Move the transformer tests.

sdk/lib/_internal/pub/test/serve/fails_to_load_a_non_existent_transform_test.dart

Index: sdk/lib/_internal/pub/test/serve/fails_to_load_a_non_existent_transform_test.dart
diff --git a/sdk/lib/_internal/pub/test/serve/fails_to_load_a_non_existent_transform_test.dart b/sdk/lib/_internal/pub/test/serve/fails_to_load_a_non_existent_transform_test.dart
deleted file mode 100644
index da0ee0ea25d1c7ab766a9acf1b19bc29d7a469cf..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/test/serve/fails_to_load_a_non_existent_transform_test.dart
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.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 pub_tests;
-
-import 'package:scheduled_test/scheduled_test.dart';
-
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-
-main() {
-  initConfig();
-  integration("fails to load a non-existent transform", () {
-    d.dir(appPath, [
-      d.pubspec({
-        "name": "myapp",
-        "transformers": ["myapp/transform"]
-      })
-    ]).create();
-
-    var pub = startPub(args: ['serve', '--port=0', "--hostname=127.0.0.1"]);
-    expect(pub.nextErrLine(), completion(equals(
-        'Transformer library "package:myapp/transform.dart" not found.')));
-    pub.shouldExit(1);
-  });
-}