Remove Linux MSR power monitoring code

telemetry/telemetry/internal/platform/linux_platform_backend.py

Index: telemetry/telemetry/internal/platform/linux_platform_backend.py
diff --git a/telemetry/telemetry/internal/platform/linux_platform_backend.py b/telemetry/telemetry/internal/platform/linux_platform_backend.py
index b266c9479af057f014b1a8d31d230debc54cd255..8f0178ced0974351d11b095cf0bc8eb054460dd6 100644
--- a/telemetry/telemetry/internal/platform/linux_platform_backend.py
+++ b/telemetry/telemetry/internal/platform/linux_platform_backend.py
@@ -16,7 +16,6 @@ from telemetry.core import util
 from telemetry import decorators
 from telemetry.internal.platform import linux_based_platform_backend
 from telemetry.internal.platform import posix_platform_backend
-from telemetry.internal.platform.power_monitor import msr_power_monitor
 
 
 _POSSIBLE_PERFHOST_APPLICATIONS = [
@@ -30,7 +29,6 @@ class LinuxPlatformBackend(
     linux_based_platform_backend.LinuxBasedPlatformBackend):
   def __init__(self):
     super(LinuxPlatformBackend, self).__init__()
-    self._power_monitor = msr_power_monitor.MsrPowerMonitorLinux(self)
 
   @classmethod
   def IsPlatformBackendForHost(cls):
@@ -100,31 +98,10 @@ class LinuxPlatformBackend(
           'Please teach Telemetry how to install ' + application)
 
   def CanMonitorPower(self):
-    # TODO(charliea): This is a stopgap until all desktop power monitoring code
-    # can be removed. (crbug.com/763263)
     return False
 
   def CanMeasurePerApplicationPower(self):
-    return self._power_monitor.CanMeasurePerApplicationPower()
-
-  def StartMonitoringPower(self, browser):
-    self._power_monitor.StartMonitoringPower(browser)
-
-  def StopMonitoringPower(self):
-    return self._power_monitor.StopMonitoringPower()
-
-  def ReadMsr(self, msr_number, start=0, length=64):
-    cmd = ['rdmsr', '-d', str(msr_number)]
-    (out, err) = subprocess.Popen(cmd,
-                                  stdout=subprocess.PIPE,
-                                  stderr=subprocess.PIPE).communicate()
-    if err:
-      raise OSError(err)
-    try:
-      result = int(out)
-    except ValueError:
-      raise OSError('Cannot interpret rdmsr output: %s' % out)
-    return result >> start & ((1 << length) - 1)
+    return False
 
   def _IsIpfwKernelModuleInstalled(self):
     return 'ipfw_mod' in subprocess.Popen(