Remove support for legacy wpr_server in Telemetry

telemetry/telemetry/core/network_controller.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.
 
 from py_trace_event import trace_event
 
 
 class NetworkController(object):
   """Control network settings and servers to simulate the Web.
 
   Network changes include forwarding device ports to host platform ports.
   Web Page Replay is used to record and replay HTTP/HTTPS responses.
   """
 
   __metaclass__ = trace_event.TracedMetaClass
 
   def __init__(self, network_controller_backend):
     self._network_controller_backend = network_controller_backend
 
   def InitializeIfNeeded(self, use_live_traffic=False):
     self._network_controller_backend.InitializeIfNeeded(use_live_traffic)
 
-  def Open(self, wpr_mode, extra_wpr_args, use_wpr_go=False):
-    self._network_controller_backend.Open(wpr_mode, extra_wpr_args, use_wpr_go)
+  def Open(self, wpr_mode, extra_wpr_args):
+    self._network_controller_backend.Open(wpr_mode, extra_wpr_args)
 
   def UpdateTrafficSettings(self,
                             round_trip_latency_ms=None,
                             download_bandwidth_kbps=None,
                             upload_bandwidth_kbps=None):
     self._network_controller_backend.ts_proxy_server.UpdateTrafficSettings(
         round_trip_latency_ms, download_bandwidth_kbps, upload_bandwidth_kbps)
 
   @property
   def is_open(self):
     return self._network_controller_backend.is_open
 
   def Close(self):
     self._network_controller_backend.Close()
 
   def StartReplay(self, archive_path, make_javascript_deterministic=False):
     self._network_controller_backend.StartReplay(archive_path,
                                                  make_javascript_deterministic)
 
   def StopReplay(self):
     self._network_controller_backend.StopReplay()