Nukes the gyp/gypi files in ui

ui/gfx/x/gfx_x11.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.
-
-{
-  'variables': {
-    'chromium_code': 1,
-    'use_x11': 1,  # It is necessary to explicitly set use_x11 here to make sure
-                   # that the exclusion rules in filename_rules.gypi do not
-                   # exclude the x11* files.
-  },
-
-  'targets': [
-    {
-      # GN version: //ui/gfx/x
-      'target_name': 'gfx_x11',
-      'type': '<(component)',
-      'dependencies': [
-        '../../../base/base.gyp:base',
-        '../../../build/linux/system.gyp:x11',
-      ],
-      'defines': [
-        'GFX_IMPLEMENTATION',
-      ],
-      'sources': [
-        'x11_atom_cache.cc',
-        'x11_atom_cache.h',
-        'x11_connection.cc',
-        'x11_connection.h',
-        'x11_error_tracker.cc',
-        'x11_error_tracker.h',
-        'x11_switches.cc',
-        'x11_switches.h',
-        'x11_types.cc',
-        'x11_types.h',
-      ],
-    },
-  ]
-}