Revert of Add a DEPS gclient hook to prune corrupt mockito remote.

webrtc/build/prune_third_party_mockito_origin.py

-#!/usr/bin/env python
-
-# Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
-#
-# Use of this source code is governed by a BSD-style license
-# that can be found in the LICENSE file in the root of the source
-# tree. An additional intellectual property rights grant can be found
-# in the file PATENTS.  All contributing project authors may
-# be found in the AUTHORS file in the root of the source tree.
-
-# Used to work around an upstream bug (crbug.com/644722).
-# This file will be removed ASAP.
-
-import os
-import subprocess
-import sys
-
-# Path to the corrupt project.
-MOCKITO_CHECKOUT_PATH = 'src/third_party/mockito/src'
-
-
-def main():
-  # If this checkout exists, run `git remote prune origin` from it.
-  if os.path.isdir(MOCKITO_CHECKOUT_PATH):
-    subprocess.check_output(
-        ['git', 'remote', 'prune', 'origin'], cwd=MOCKITO_CHECKOUT_PATH)
-  else:
-    sys.stdout.write('{} does not exist!\n'.format(MOCKITO_CHECKOUT_PATH))
-  return 0
-
-
-if __name__ == '__main__':
-  sys.exit(main())