Revert "Add gsutil 4.13 to telemetry/third_party"

tools/telemetry/third_party/gsutil/gslib/tests/mock_logging_handler.py

-# -*- coding: utf-8 -*-
-# Copyright 2014 Google Inc. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-"""Mock logging handler to check for expected logs."""
-
-import logging
-
-
-class MockLoggingHandler(logging.Handler):
-  """Mock logging handler to check for expected logs."""
-
-  def __init__(self, *args, **kwargs):
-    self.reset()
-    logging.Handler.__init__(self, *args, **kwargs)
-
-  def emit(self, record):
-    self.messages[record.levelname.lower()].append(record.getMessage())
-
-  def reset(self):
-    self.messages = {
-        'debug': [],
-        'info': [],
-        'warning': [],
-        'error': [],
-        'critical': [],
-    }