Remove all .gyp and .gypi files.

third_party/protobuf/protobuf_nacl.gyp

-# 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.
-
-{
-  'includes': [
-    '../../native_client/build/untrusted.gypi',
-  ],
-  'targets': [
-    {
-      'target_name': 'protobuf_lite_nacl',
-      'type': 'none',
-      'variables': {
-        'nlib_target': 'libprotobuf_lite_nacl.a',
-        'build_glibc': 0,
-        'build_newlib': 0,
-        'build_pnacl_newlib': 1,
-        'config_h_dir': '.',
-      },
-      'dependencies': [
-        '../../native_client/tools.gyp:prep_toolchain',
-      ],
-      'pnacl_compile_flags': [
-        # This disables #warning in hash_map/hash_set headers which are
-        # deprecated but still used in protobuf.
-        #
-        # TODO(sergeyu): Migrate protobuf to unordered_man and unordered_set
-        # and remove this flag.
-        '-Wno-#warnings',
-      ],
-      'includes': [
-        'protobuf_lite.gypi',
-      ],
-    },  # end of target 'protobuf_lite_nacl'
-  ]
-}