[ios clean] Moves animator and presenters under transitions

ios/clean/chrome/browser/ui/presenters/BUILD.gn

Index: ios/clean/chrome/browser/ui/presenters/BUILD.gn
diff --git a/ios/clean/chrome/browser/ui/presenters/BUILD.gn b/ios/clean/chrome/browser/ui/presenters/BUILD.gn
deleted file mode 100644
index 3a89a3397b829af9a0ea5f2bc9b700a6b3292dea..0000000000000000000000000000000000000000
--- a/ios/clean/chrome/browser/ui/presenters/BUILD.gn
+++ /dev/null
@@ -1,17 +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("presenters") {
-  sources = [
-    "menu_presentation_controller.h",
-    "menu_presentation_controller.mm",
-    "menu_presentation_delegate.h",
-  ]
-
-  configs += [ "//build/config/compiler:enable_arc" ]
-
-  deps = [
-    "//ios/clean/chrome/browser/ui/commands",
-  ]
-}