Support directories other than "web" in pub build.

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

Index: sdk/lib/_internal/pub/test/build/with_no_web_directory_test.dart
diff --git a/sdk/lib/_internal/pub/test/build/with_no_web_directory_test.dart b/sdk/lib/_internal/pub/test/build/with_no_web_directory_test.dart
deleted file mode 100644
index d25df7257f861a455ce60a9303937d09f4d14d02..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/test/build/with_no_web_directory_test.dart
+++ /dev/null
@@ -1,19 +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("with no web directory", () {
-    d.appDir().create();
-
-    schedulePub(args: ["build"],
-        error: new RegExp(r'^There is no "[^"]+[/\\]web" directory.$',
-            multiLine: true),
-        exitCode: 1);
-  });
-}