Start pulling pub from its own repo.

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

Index: sdk/lib/_internal/pub/test/get/hosted/stay_locked_if_compatible_test.dart
diff --git a/sdk/lib/_internal/pub/test/get/hosted/stay_locked_if_compatible_test.dart b/sdk/lib/_internal/pub/test/get/hosted/stay_locked_if_compatible_test.dart
deleted file mode 100644
index d8c29a41ffbad98e912331363c5cd2f2edf665e9..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/test/get/hosted/stay_locked_if_compatible_test.dart
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright (c) 2012, 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 '../../descriptor.dart' as d;
-import '../../test_pub.dart';
-
-main() {
-  initConfig();
-  integration("doesn't upgrade a locked pub server package with a new "
-      "compatible constraint", () {
-    servePackages((builder) => builder.serve("foo", "1.0.0"));
-
-    d.appDir({"foo": "any"}).create();
-
-    pubGet();
-
-    d.packagesDir({"foo": "1.0.0"}).validate();
-
-    servePackages((builder) => builder.serve("foo", "1.0.1"));
-
-    d.appDir({"foo": ">=1.0.0"}).create();
-
-    pubGet();
-
-    d.packagesDir({"foo": "1.0.0"}).validate();
-  });
-}