Remove all .gyp and .gypi files.

build/internal/release_impl.gypi

-# 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.
-{
-  'includes': ['release_defaults.gypi'],
-  'msvs_settings': {
-    'VCCLCompilerTool': {
-      'OmitFramePointers': 'false',
-      # The above is not sufficient (http://crbug.com/106711): it
-      # simply eliminates an explicit "/Oy", but both /O2 and /Ox
-      # perform FPO regardless, so we must explicitly disable.
-      # We still want the false setting above to avoid having
-      # "/Oy /Oy-" and warnings about overriding.
-      'AdditionalOptions': ['/Oy-'],
-    },
-  },
-}