Remove slimming-paint-reviews from src/ WATCHLISTS.

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 1577 matching lines @@
     'blink_mediastream': ['mcasas+watch+mediastream@chromium.org',
                           'tommyw+watchlist@chromium.org'],
     'blink_modules': ['haraken@chromium.org'],
     'blink_navigator_content_utils': ['gyuyoung.kim@chromium.org'],
     'blink_notifications': ['awdf+watch@chromium.org',
                             'peter@chromium.org'],
     'blink_out_of_process_frames': ['dcheng@chromium.org',
                                     'mlamouri+watch-blink@chromium.org'],
     'blink_owners': ['abarth@chromium.org'],
     'blink_paint' : ['blink-reviews-paint@chromium.org',
-                     'dongseong.hwang@intel.com',
-                     'slimming-paint-reviews@chromium.org'],
+                     'dongseong.hwang@intel.com'],
     'blink_permissions': ['mlamouri+watch-blink@chromium.org'],
     'blink_platform_graphics': ['ajuma+watch@chromium.org',
                                 'blink-reviews-platform-graphics@chromium.org',
                                 'cabanier@adobe.com',
                                 'danakj+watch@chromium.org',
                                 'dongseong.hwang@intel.com',
                                 'drott+blinkwatch@chromium.org',
                                 'dschulze@chromium.org',
                                 'fmalita@chromium.org',
                                 'jbroman@chromium.org',
@@ skipping 387 matching lines @@
                          'raymes+watch@chromium.org'],
     'windows_sandboxing': ['pennymac+watch@chromium.org',
                            'wfh+watch@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
     'xml': ['dominicc+watchlist@chromium.org'],
     'zoom': ['wjmaclean@chromium.org'],
   },
 }