Start pulling pub from its own repo.

sdk/lib/_internal/pub/test/get/hosted/unlock_if_version_doesnt_exist_test.dart

Index: sdk/lib/_internal/pub/test/get/hosted/unlock_if_version_doesnt_exist_test.dart
diff --git a/sdk/lib/_internal/pub/test/get/hosted/unlock_if_version_doesnt_exist_test.dart b/sdk/lib/_internal/pub/test/get/hosted/unlock_if_version_doesnt_exist_test.dart
deleted file mode 100644
index a3f57ff829131ce1346b7c84087ef4c111725850..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/test/get/hosted/unlock_if_version_doesnt_exist_test.dart
+++ /dev/null
@@ -1,30 +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.
-
-library pub_tests;
-
-import 'package:path/path.dart' as p;
-import 'package:scheduled_test/scheduled_test.dart';
-
-import '../../../lib/src/io.dart';
-import '../../descriptor.dart' as d;
-import '../../test_pub.dart';
-
-main() {
-  initConfig();
-  integration('upgrades a locked pub server package with a nonexistent version',
-      () {
-    servePackages((builder) => builder.serve("foo", "1.0.0"));
-
-    d.appDir({"foo": "any"}).create();
-    pubGet();
-    d.packagesDir({"foo": "1.0.0"}).validate();
-
-    schedule(() => deleteEntry(p.join(sandboxDir, cachePath)));
-
-    servePackages((builder) => builder.serve("foo", "1.0.1"), replace: true);
-    pubGet();
-    d.packagesDir({"foo": "1.0.1"}).validate();
-  });
-}