Nukes the gyp/gypi files in ui

ui/platform_window/platform_window.gyp

Index: ui/platform_window/platform_window.gyp
diff --git a/ui/platform_window/platform_window.gyp b/ui/platform_window/platform_window.gyp
deleted file mode 100644
index a006e75a6fd82d8415a42e32c865a59fd8401580..0000000000000000000000000000000000000000
--- a/ui/platform_window/platform_window.gyp
+++ /dev/null
@@ -1,18 +0,0 @@
-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-{
-  'variables': {
-    'chromium_code': 1,
-  },
-  'targets': [{
-    # GN version: //ui/platform_window
-    'target_name': 'platform_window',
-    'type': 'none',
-    'sources': [
-      'platform_window.h',
-      'platform_window_delegate.h',
-    ],
-  }],
-}