Start pulling pub from its own repo.

sdk/lib/_internal/pub/test/global/run/nonexistent_script_test.dart

Index: sdk/lib/_internal/pub/test/global/run/nonexistent_script_test.dart
diff --git a/sdk/lib/_internal/pub/test/global/run/nonexistent_script_test.dart b/sdk/lib/_internal/pub/test/global/run/nonexistent_script_test.dart
deleted file mode 100644
index d69c65ab5861d40fb8a962499cedc929cba05ff9..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/test/global/run/nonexistent_script_test.dart
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright (c) 2014, 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 'package:path/path.dart' as p;
-
-import '../../../lib/src/exit_codes.dart' as exit_codes;
-import '../../test_pub.dart';
-
-main() {
-  initConfig();
-  integration('errors if the script does not exist.', () {
-    servePackages((builder) => builder.serve("foo", "1.0.0"));
-
-    schedulePub(args: ["global", "activate", "foo"]);
-
-    var pub = pubRun(global: true, args: ["foo:script"]);
-    pub.stderr.expect("Could not find ${p.join("bin", "script.dart")}.");
-    pub.shouldExit(exit_codes.NO_INPUT);
-  });
-}