Remove GYP files.

ios/provider/ios_provider_web.gyp

Index: ios/provider/ios_provider_web.gyp
diff --git a/ios/provider/ios_provider_web.gyp b/ios/provider/ios_provider_web.gyp
deleted file mode 100644
index ef8b55e1590fda90431992a04adc51804947ce07..0000000000000000000000000000000000000000
--- a/ios/provider/ios_provider_web.gyp
+++ /dev/null
@@ -1,26 +0,0 @@
-# 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.
-{
-  'variables': {
-    'chromium_code': 1,
-   },
-  'targets': [
-    {
-      # GN version: //ios/public/provider/web
-      'target_name': 'ios_provider_web',
-      'type': 'static_library',
-      'include_dirs': [
-        '../..',
-      ],
-      'dependencies': [
-        '../../base/base.gyp:base',
-        '../web/ios_web.gyp:ios_web',
-      ],
-      'sources': [
-        '../public/provider/web/web_controller_provider.h',
-        '../public/provider/web/web_controller_provider.mm',
-      ],
-    },
-  ],
-}