Remove Linux ARM Compile from main waterfall.

masters/master.chromium.linux/master_linux_cfg.py

 # 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.
 
 from buildbot.scheduler import Triggerable
 from buildbot.schedulers.basic import SingleBranchScheduler
 
 from master.factory import annotator_factory
 
 m_annotator = annotator_factory.AnnotatorFactory()
 
 def Update(_config, active_master, c):
   c['schedulers'].extend([
       SingleBranchScheduler(name='linux_src',
                             branch='master',
                             treeStableTimer=60,
                             builderNames=[
           'Linux Builder',
           'Linux Builder (dbg)(32)',
           'Linux Builder (dbg)',
           'Linux GN',
           'Linux GN Clobber',
           'Linux GN (dbg)',
-          'Linux ARM',
           'Cast Linux',
       ]),
   ])
   specs = [
     {'name': 'Linux Builder'},
     {'name': 'Linux Tests'},
     {'name': 'Linux Builder (dbg)(32)'},
     {'name': 'Linux Tests (dbg)(1)(32)'},
     {'name': 'Linux Builder (dbg)'},
     {'name': 'Linux Tests (dbg)(1)'},
     {'name': 'Linux GN'},
     {'name': 'Linux GN Clobber'},
     {'name': 'Linux GN (dbg)'},
-    {'name': 'Linux ARM'},
     {'name': 'Cast Linux'},
   ]
 
   c['builders'].extend([
       {
         'name': spec['name'],
         'factory': m_annotator.BaseFactory(
             spec.get('recipe', 'chromium'),
             factory_properties=spec.get('factory_properties')),
         'notify_on_missing': True,
         'category': '4linux',
       } for spec in specs
   ])