Remove GYP files from components.

components/web_modal.gypi

-# Copyright (c) 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.
-
-{
-  'targets': [
-    {
-      # GN version: //components/web_modal
-      'target_name': 'web_modal',
-      'type': 'static_library',
-      'include_dirs': [
-        '..',
-      ],
-      'dependencies': [
-        '../base/base.gyp:base',
-        '../content/content.gyp:content_browser',
-        '../skia/skia.gyp:skia',
-      ],
-      'sources': [
-        # Note: sources list duplicated in GN build.
-        'web_modal/modal_dialog_host.cc',
-        'web_modal/modal_dialog_host.h',
-        'web_modal/single_web_contents_dialog_manager.h',
-        'web_modal/web_contents_modal_dialog_host.cc',
-        'web_modal/web_contents_modal_dialog_host.h',
-        'web_modal/web_contents_modal_dialog_manager.cc',
-        'web_modal/web_contents_modal_dialog_manager.h',
-        'web_modal/web_contents_modal_dialog_manager_delegate.cc',
-        'web_modal/web_contents_modal_dialog_manager_delegate.h',
-      ],
-    },
-    {
-      # GN version: //components/web_modal:test_support
-      'target_name': 'web_modal_test_support',
-      'type': 'static_library',
-      'dependencies': [
-        'web_modal',
-      ],
-      'sources': [
-        # Note: sources list duplicated in GN build.
-        'web_modal/test_web_contents_modal_dialog_host.cc',
-        'web_modal/test_web_contents_modal_dialog_host.h',
-        'web_modal/test_web_contents_modal_dialog_manager_delegate.cc',
-        'web_modal/test_web_contents_modal_dialog_manager_delegate.h',
-      ],
-    },
-  ],
-}