Fix test_check_unused_ibus_values failure which is caused by my recent change:

client/site_tests/desktopui_IBusTest/desktopui_IBusTest.py

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import logging, os, re, string, time
 from autotest_lib.client.bin import site_ui_test, test
 from autotest_lib.client.common_lib import error, site_ui, utils
 
 def wait_for_ibus_daemon_or_die(timeout=10):
     # Wait until ibus-daemon starts. ibus-daemon starts after a user
@@ skipping 90 matching lines @@
                                # ibus-daemon reads them before chrome connects,
                                # so they show up as a false failure.
                                'general/hotkeynext_engine_in_menu',
                                'general/hotkeyprevious_engine',
                                'generalglobal_engine',
                                'generalglobal_previous_engine'])
 
         expected_unwritten = set(['engine/ChewingsyncCapsLockLocal',
                                   'engine/ChewingnumpadAlwaysNumber',
                                   'engine/ChewinginputStyle',
-                                  'engine/HangulHanjaKeys',
                                   'engine/PinyinCorrectPinyin_GN_NG',
                                   'engine/PinyinCorrectPinyin_IOU_IU',
                                   'engine/PinyinCorrectPinyin_MG_NG',
                                   'engine/PinyinCorrectPinyin_UEN_UN',
                                   'engine/PinyinCorrectPinyin_UE_VE',
                                   'engine/PinyinCorrectPinyin_VE_UE',
                                   'engine/PinyinCorrectPinyin_V_U',
                                   'engine/PinyinDoublePinyinShowRaw',
                                   'engine/PinyinFuzzyPinyin_ANG_AN',
                                   'engine/PinyinFuzzyPinyin_AN_ANG',
@@ skipping 106 matching lines @@
 
         self.exefile = os.path.join(self.autodir,
                                     'deps/ibusclient/ibusclient')
         self.test_reachable()
         self.test_supported_engines()
         for type_name in ['boolean', 'int', 'double', 'string', 'boolean_list',
                           'int_list', 'double_list', 'string_list']:
             self.test_config(type_name)
 
         self.test_check_unused_ibus_values()