Revert of Revert of telemetry: Clean up SurfaceFlinger statistics

tools/telemetry/telemetry/core/platform/cros_platform_backend.py

Index: tools/telemetry/telemetry/core/platform/cros_platform_backend.py
diff --git a/tools/telemetry/telemetry/core/platform/cros_platform_backend.py b/tools/telemetry/telemetry/core/platform/cros_platform_backend.py
index e3d41c4ef030f91803995d00e23ee915322aa77a..fb8afee4779e6e802c87d29695842342f956ee96 100644
--- a/tools/telemetry/telemetry/core/platform/cros_platform_backend.py
+++ b/tools/telemetry/telemetry/core/platform/cros_platform_backend.py
@@ -29,15 +29,6 @@
   @property
   def cri(self):
     return self._cri
-
-  def StartRawDisplayFrameRateMeasurement(self):
-    raise NotImplementedError()
-
-  def StopRawDisplayFrameRateMeasurement(self):
-    raise NotImplementedError()
-
-  def GetRawDisplayFrameRateMeasurements(self):
-    raise NotImplementedError()
 
   def IsThermallyThrottled(self):
     raise NotImplementedError()