Remove GYP files.

native_client_sdk/native_client_sdk_untrusted.gyp

-# Copyright 2013 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': [
-    '../build/common_untrusted.gypi',
-  ],
-  'conditions': [
-    ['disable_nacl==0 and disable_nacl_untrusted==0', {
-      'targets': [
-        {
-          'target_name': 'nacl_io_untrusted',
-          'type': 'none',
-          'variables': {
-            'nacl_untrusted_build': 1,
-            'nlib_target': 'libnacl_io.a',
-            'build_newlib': 1,
-            'build_pnacl_newlib': 1,
-          },
-          'include_dirs': [
-            '../native_client/src/untrusted/irt',
-            'src/libraries',
-            'src/libraries/nacl_io/include',
-            'src/libraries/third_party/newlib-extras',
-          ],
-          'direct_dependent_settings': {
-            'include_dirs': [
-              'src/libraries',
-              'src/libraries/nacl_io/include',
-              'src/libraries/third_party/newlib-extras',
-            ],
-          },
-          'sources': [
-            '>!@pymod_do_main(dsc_info -s -l src/libraries/nacl_io nacl_io)',
-          ],
-          'dependencies': [
-            '../ppapi/native_client/native_client.gyp:ppapi_lib',
-          ],
-        },
-      ],
-    }],
-  ],
-}