Remove Linux MSR power monitoring code

telemetry/telemetry/internal/platform/power_monitor/msr_power_monitor.py

 # Copyright 2014 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.
 
 import logging
 import platform
 import re
 
 from telemetry import decorators
 from telemetry.internal.platform import power_monitor
@@ skipping 78 matching lines @@
 
       if self._TemperatureCelsius() <= 0:
         logging.info('Cannot monitor power: no temperature readings.')
         return False
     except OSError as e:
       logging.info('Cannot monitor power: %s' % e)
       return False
     return True
 
 
-class MsrPowerMonitorLinux(MsrPowerMonitor):
-  def CanMonitorPower(self):
-    vendor = None
-    family = None
-    model = None
-    cpuinfo = open('/proc/cpuinfo').read().splitlines()
-    for line in cpuinfo:
-      if vendor and family and model:
-        break
-      if line.startswith('vendor_id'):
-        vendor = line.split('\t')[1]
-      elif line.startswith('cpu family'):
-        family = int(line.split(' ')[2])
-      elif line.startswith('model\t\t'):
-        model = int(line.split(' ')[1])
-    if not _IsSandyBridgeOrLater(vendor, family, model):
-      logging.info('Cannot monitor power: pre-Sandy Bridge CPU.')
-      return False
-
-    if not self._CheckMSRs():
-      logging.info('Try running tools/telemetry/build/linux_setup_msr.py.')
-      return False
-
-    return True
-
-
 class MsrPowerMonitorWin(MsrPowerMonitor):
   def CanMonitorPower(self):
     family, model = map(int, re.match(
         '.+ Family ([0-9]+) Model ([0-9]+)',
         platform.processor()).groups())
     if not _IsSandyBridgeOrLater(platform.processor(), family, model):
       logging.info('Cannot monitor power: pre-Sandy Bridge CPU.')
       return False
 
     try:
       return self._CheckMSRs()
     finally:
       # Since _CheckMSRs() starts the MSR server on win platform, we must close
       # it after checking to avoid leaking msr server process.
       self._backend.CloseMsrServer()
 
   def StopMonitoringPower(self):
     power_statistics = super(MsrPowerMonitorWin, self).StopMonitoringPower()
     self._backend.CloseMsrServer()
     return power_statistics