[Installer] Cleaning up dead code for App Launcher / App Host installs.

chrome/installer/util/eula_util.h

-// 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.
-//
-// This file contains helper functions to read the Chrome EULA.
-
-#ifndef CHROME_INSTALLER_UTIL_EULA_UTIL_H_
-#define CHROME_INSTALLER_UTIL_EULA_UTIL_H_
-
-namespace installer {
-
-enum EULAAcceptanceResponse{
-  QUERY_EULA_FAIL = -1,
-  QUERY_EULA_NOT_ACCEPTED = 0,
-  QUERY_EULA_ACCEPTED = 1,
-};
-
-// Performs a comprehensive test on EULA acceptance in Chrome.
-// This is mostly intended for system-level Chrome, although it also supports
-// user-level Chrome (should return QUERY_EULA_ACCEPTED).
-EULAAcceptanceResponse IsEULAAccepted(bool system_level);
-
-}  // namespace installer
-
-#endif  // CHROME_INSTALLER_UTIL_EULA_UTIL_H_