Remove the top-level GYP files (or stub them out).

build/some.gyp

Index: build/some.gyp
diff --git a/build/some.gyp b/build/some.gyp
deleted file mode 100644
index 44a1dd59eb117ba511a2af3d163e15d0b8020153..0000000000000000000000000000000000000000
--- a/build/some.gyp
+++ /dev/null
@@ -1,24 +0,0 @@
-# Copyright (c) 2011 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.
-{
-  'targets': [
-    {
-      'target_name': 'some',
-      'type': 'none',
-      'dependencies': [
-        # This file is intended to be locally modified. List the targets you use
-        # regularly. The generated some.sln will contains projects for only
-        # those targets and the targets they are transitively dependent on. This
-        # can result in a solution that loads and unloads faster in Visual
-        # Studio.
-        #
-        # Tip: Create a dummy CL to hold your local edits to this file, so they
-        # don't accidentally get added to another CL that you are editing.
-        #
-        # Example:
-        # '../chrome/chrome.gyp:chrome',
-      ],
-    },
-  ],
-}