Revert of Re-land "Make Buildbot masters send ts_mon metrics, and add standard HTTP server metrics.

scripts/master/monitoring_status_receiver.py

-# Copyright 2016 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.base import StatusReceiverMultiService
-from twisted.internet import task
-from twisted.python import log, threadpool
-
-from infra_libs import ts_mon
-
-
-class MonitoringStatusReceiver(StatusReceiverMultiService):
-  """Flushes ts_mon metrics once per minute."""
-
-  def __init__(self):
-    StatusReceiverMultiService.__init__(self)
-    self.status = None
-    self.thread_pool = threadpool.ThreadPool(1, 1)
-    self.loop = task.LoopingCall(self._flush)
-
-  def startService(self):
-    StatusReceiverMultiService.startService(self)
-    self.status = self.parent.getStatus()
-    self.status.subscribe(self)
-
-    self.thread_pool.start()
-    self.loop.start(60, now=False)
-
-  def stopService(self):
-    self.loop.stop()
-    self.thread_pool.stop()
-    return StatusReceiverMultiService.stopService(self)
-
-  def _flush(self):
-    self.thread_pool.callInThread(self._flush_and_log_exceptions)
-
-  def _flush_and_log_exceptions(self):
-    try:
-      ts_mon.flush()
-    except Exception:
-      log.err(None, 'Automatic monitoring flush failed.')