Remove ChromeBrowserProvider::CreateSyncedWindowDelegatesGetter().

ios/public/provider/chrome/browser/sessions/BUILD.gn

Index: ios/public/provider/chrome/browser/sessions/BUILD.gn
diff --git a/ios/public/provider/chrome/browser/sessions/BUILD.gn b/ios/public/provider/chrome/browser/sessions/BUILD.gn
deleted file mode 100644
index 6d75d90c9f7e1449d610d86795d515848d8ec301..0000000000000000000000000000000000000000
--- a/ios/public/provider/chrome/browser/sessions/BUILD.gn
+++ /dev/null
@@ -1,15 +0,0 @@
-# Copyright 2016 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.
-
-source_set("test_support") {
-  testonly = true
-  sources = [
-    "test_synced_window_delegates_getter.cc",
-    "test_synced_window_delegates_getter.h",
-  ]
-  deps = [
-    "//base",
-    "//components/sync_sessions",
-  ]
-}