V8 Buildbot: Remove swarming staging builders/testers.

masters/master.client.v8/mail_notifier_cfg.py

 # Copyright 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.
 
 from buildbot.status.builder import FAILURE
 from master import chromium_notifier
 from master import master_utils
 
 
 v8_steps = [
@@ skipping 22 matching lines @@
 
 # This is the list of the builder categories and the corresponding critical
 # steps. If one critical step fails, the blame list will be notified.
 # Note: don't include 'update scripts' since we can't do much about it when
 # it's failing and the tree is still technically fine.
 categories_steps = {
   '': v8_steps,
 }
 
 exclusions = {
-  'V8 Linux - swarming staging builder': [],
-  'V8 Linux - swarming staging 1': [],
-  'V8 Linux - swarming staging 2': [],
-  'V8 Linux - swarming staging 3': [],
+  'V8 Linux - swarming staging': [],
   'V8 Linux - debug - greedy allocator': [],
   'V8 Linux64 - debug - greedy allocator': [],
   'V8 Linux64 - cfi': [],
   'V8 Linux64 - gcov coverage': [],
   'V8 Linux - ppc - sim': [],
   'V8 Linux - ppc64 - sim': [],
   'V8 Linux - mipsel - sim': [],
   'V8 Mips - big endian - nosnap - 1': [],
   'V8 Mips - big endian - nosnap - 2': [],
   'V8 Linux - x87 - nosnap - debug builder': [],
@@ skipping 73 matching lines @@
       relayhost=config.Master.smtp,
       sendToInterestedUsers=False,
       extraRecipients=[
         'v8-clusterfuzz-sheriff@chromium.org',
         'machenbach@chromium.org',
       ],
       status_header='buildbot failure in %(project)s on %(builder)s, %(steps)s',
       lookup=master_utils.FilterDomain(),
       forgiving_steps=forgiving_steps))