cros: Fold UserBoardModel into UserSelectionScreen.

chrome/browser/chromeos/login/ui/models/user_board_model.cc

Index: chrome/browser/chromeos/login/ui/models/user_board_model.cc
diff --git a/chrome/browser/chromeos/login/ui/models/user_board_model.cc b/chrome/browser/chromeos/login/ui/models/user_board_model.cc
deleted file mode 100644
index 584e3f0d5767d9eccd1955876951da9c418ca756..0000000000000000000000000000000000000000
--- a/chrome/browser/chromeos/login/ui/models/user_board_model.cc
+++ /dev/null
@@ -1,14 +0,0 @@
-// 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.
-
-#include "chrome/browser/chromeos/login/ui/models/user_board_model.h"
-
-namespace chromeos {
-
-UserBoardModel::UserBoardModel()
-    : BaseScreen(nullptr, OobeScreen::SCREEN_USER_SELECTION) {}
-
-UserBoardModel::~UserBoardModel() {}
-
-}  // namespace chromeos