Remove blink_perf.pywebsocket tests

tools/perf/benchmarks/pywebsocket_server.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 os
-import sys
-
-from core import path_util
-
-from telemetry.core import local_server
-from telemetry.core import util
-
-
-# This invokes pywebsocket's standalone.py under third_party/pywebsocket
-class PywebsocketServerBackend(local_server.LocalServerBackend):
-
-  def __init__(self):
-    super(PywebsocketServerBackend, self).__init__()
-    self.port = 8001
-    self.base_dir = os.path.relpath(
-        os.path.join(path_util.GetChromiumSrcDir(),
-                     'third_party', 'pywebsocket', 'src'),
-        start=util.GetTelemetryDir())
-
-  def StartAndGetNamedPorts(self, args):
-    return [local_server.NamedPort('http', self.port)]
-
-  def ServeForever(self):
-    os.chdir(self.base_dir)
-    cmd = [
-        sys.executable, '-m', 'mod_pywebsocket.standalone',
-        '--port', str(self.port),
-        '--log-level', 'debug',
-        '-d', 'example'
-    ]
-    os.execv(sys.executable, cmd)
-
-
-class PywebsocketServer(local_server.LocalServer):
-
-  def __init__(self):
-    super(PywebsocketServer, self).__init__(PywebsocketServerBackend)
-
-  def GetBackendStartupArgs(self):
-    return {}