Remove support for legacy wpr_server in Telemetry

telemetry/telemetry/testing/fakes/__init__.py

 # Copyright 2015 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.
 
 """Provides fakes for several of Telemetry's internal objects.
 
 These allow code like story_runner and Benchmark to be run and tested
 without compiling or starting a browser. Class names prepended with an
 underscore are intended to be implementation details, and should not
 be subclassed; however, some, like _FakeBrowser, have public APIs that
@@ skipping 355 matching lines @@
     self.use_live_traffic = None
 
   def InitializeIfNeeded(self, use_live_traffic=False):
     self.use_live_traffic = use_live_traffic
 
   def UpdateTrafficSettings(
       self, round_trip_latency_ms=None,
       download_bandwidth_kbps=None, upload_bandwidth_kbps=None):
     pass
 
-  def Open(self, wpr_mode, extra_wpr_args, use_wpr_go=False):
-    del use_wpr_go  # Unused.
+  def Open(self, wpr_mode, extra_wpr_args):
     self.wpr_mode = wpr_mode
     self.extra_wpr_args = extra_wpr_args
     self.is_open = True
 
   def Close(self):
     self.wpr_mode = None
     self.extra_wpr_args = None
     self.is_initialized = False
     self.is_open = False
 
@@ skipping 194 matching lines @@
     self._elapsed_time = time
 
   def __del__(self):
     self.Restore()
 
   def Restore(self):
     if self._module:
       self._module.time = self._actual_time
       self._module = None
       self._actual_time = None