Remove erikkay from extension watchlist per his request

WATCHLISTS

 # Copyright (c) 2011 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.
 
 # Watchlist Rules
 # Refer: http://dev.chromium.org/developers/contributing-code/watchlists
 
 
 {
   'WATCHLIST_DEFINITIONS': {
@@ skipping 323 matching lines @@
     'renderer': ['darin-cc@chromium.org',
                  'brettw-cc@chromium.org'],
     'tab_contents': ['brettw-cc@chromium.org', 'avi@chromium.org',
                      'creis+watch@chromium.org', 'ajwong+watch@chromium.org'],
     'site_instance': ['creis+watch@chromium.org', 'ajwong+watch@chromium.org'],
     'webkit': ['darin-cc@chromium.org'],
     'plugin': ['darin-cc@chromium.org', 'jam@chromium.org',
                'stuartmorgan+watch@chromium.org'],
     'worker': ['jam@chromium.org'],
     'extension': ['aa@chromium.org',
-                  'erikkay@chromium.org',
                   'mihaip+watch@chromium.org',
                   'jstritar+watch@chromium.org'],
     'net': ['darin-cc@chromium.org', 'cbentzel+watch@chromium.org'],
     'net_error_list': ['mmenke@chromium.org'],
     'net_log': ['mmenke@chromium.org', 'eroman@chromium.org'],
     'ftp': ['phajdan.jr@chromium.org'],
     'dns': ['mmenke@chromium.org'],
     'media': ['acolwell+watch@chromium.org',
               'annacc+watch@chromium.org', 'ddorwin+watch@chromium.org',
               'fischman+watch@chromium.org', 'hclam+watch@chromium.org',
@@ skipping 76 matching lines @@
     'browser_gl': ['dhollowa+watch@chromium.org'],
     'textinput': ['penghuang+watch@chromium.org',
                   'suzhe@chromium.org',
                   'yusukes+watch@chromium.org'],
     'textinput_chromeos': ['yusukes+watch@chromium.org'],
     'omnibox': ['suzhe@chromium.org'],
     'message_loop': ['sadrul@chromium.org'],
     'clipboard': ['dcheng@chromium.org'],
   },
 }