Remove all gyp[i] files in //chrome

chrome/chrome_web_ui_mojo_bindings.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.
-{
-  'targets': [
-    {
-      'target_name': 'web_ui_mojo_bindings',
-      # The type of this target must be none. This is so that resources can
-      # depend upon this target for generating the js bindings files. Any
-      # generated cpp files be listed explicitly in browser_ui.
-      'type': 'none',
-      'sources': [
-        # GN version: //chrome/browser/ui/webui/engagement:mojo_bindings
-        'browser/ui/webui/engagement/site_engagement.mojom',
-        # GN version: //chrome/browser/ui/webui/omnibox:mojo_bindings
-        'browser/ui/webui/omnibox/omnibox.mojom',
-        # GN version: //chrome/browser/ui/webui/plugins:mojo_bindings
-        'browser/ui/webui/plugins/plugins.mojom',
-      ],
-      'variables': {
-        'mojom_typemaps': [
-          '<(DEPTH)/url/mojo/gurl.typemap',
-        ],
-        'use_new_wrapper_types': 'false',
-      },
-      'includes': [ '../mojo/mojom_bindings_generator.gypi' ],
-    },
-  ],
-}