Delete windows signal test

sdk/lib/_internal/pub/test/run/forwards_signal_windows_test.dart

Index: sdk/lib/_internal/pub/test/run/forwards_signal_windows_test.dart
diff --git a/sdk/lib/_internal/pub/test/run/forwards_signal_windows_test.dart b/sdk/lib/_internal/pub/test/run/forwards_signal_windows_test.dart
deleted file mode 100644
index fa025ec90226aa44eb514bd72f8d3619ca775793..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/test/run/forwards_signal_windows_test.dart
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright (c) 2015, 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 'dart:io';
-
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-
-const SCRIPT = """
-import 'dart:io';
-
-main() {
-  ProcessSignal.SIGHUP.watch().first.then(print);
-
-  print("ready");
-}
-""";
-
-main() {
-  initConfig();
-  integration('forwards signals to the inner script', () {
-    d.dir(appPath, [
-      d.appPubspec(),
-      d.dir("bin", [
-        d.file("script.dart", SCRIPT)
-      ])
-    ]).create();
-
-    var pub = pubRun(args: ["bin/script"]);
-
-    pub.stdout.expect("ready");
-    pub.signal(ProcessSignal.SIGHUP);
-    pub.stdout.expect("SIGHUP");
-
-    pub.kill();
-  });
-}