chromeos: Delete old, unused contacts code.

WATCHLISTS

 # Copyright (c) 2012 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
 
 # IMPORTANT: The regular expression filepath is tested against each path using
 # re.search, so it is not usually necessary to add .*.
 
@@ skipping 181 matching lines @@
     'chromeos_webui': {
       'filepath': 'chrome/browser/ui/webui/chromeos/|'\
                   'chrome/browser/resources/chromeos/',
     },
     'clang_update': {
       'filepath': 'tools/clang/scripts/update.sh'
     },
     'clipboard': {
       'filepath': 'clipboard|dnd|drag|drop',
     },
-    'contacts': {
-      'filepath': 'chrome/browser/chromeos/contacts/|'\
-                  'chrome/browser/chromeos/gdata/gdata_contacts_service',
-    },
     'content': {
       'filepath': 'content/',
     },
     'content_shell': {
       'filepath': 'content/shell/',
     },
     'cookie_monster': {
       'filepath': 'net/cookies/|'\
                   'chrome/browser/net/sqlite_persistent_cookie_store',
     },
@@ skipping 505 matching lines @@
     'chromeos_attestation' : ['dkrahn+watch@chromium.org'],
     'chromeos_calculator' : ['dharcourt@chromium.org'],
     'chromeos_net' : ['stevenjb+watch@chromium.org'],
     'chromeos_power' : ['derat+watch@chromium.org'],
     'chromeos_webui': ['nkostylev+watch@chromium.org'],
     'clang_update': ['ukai+watch@chromium.org',
                      'dmikurube+clang@chromium.org',
                      'eugenis+clang@chromium.org',
                      'glider+clang@chromium.org'],
     'clipboard': ['dcheng@chromium.org'],
-    'contacts': ['derat+watch@chromium.org'],
     'content': ['jam@chromium.org', 'joi+watch-content@chromium.org',
                 'darin-cc@chromium.org'],
     'content_shell': ['jochen+watch@chromium.org'],
     'cookie_monster': ['erikwright@chromium.org'],
     'deep_memory_profiler': ['dmikurube+memory@chromium.org'],
     'device_orientation': ['timvolodine@chromium.org', 'mvanouwerkerk@chromium.org'],
     'devtools': ['pfeldman@chromium.org', 'yurys@chromium.org',
                  'vsevik@chromium.org', 'aandrey+blink@chromium.org',
                  'paulirish+reviews@chromium.org',
                  'devtools-reviews@chromium.org'],
@@ skipping 139 matching lines @@
     'webrtc_media': ['fischman+watch@chromium.org',
                      'wjia+watch@chromium.org',
                      'mcasas+watch@chromium.org'],
     'website_settings': ['markusheintz@chromium.org'],
     'worker': ['jam@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
   },
 }