Remove Skia's forked buildbot code

slave/skia_slave_scripts/utils/force_update_checkout.py

-#!/usr/bin/env python
-# Copyright (c) 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.
-
-
-"""Forcibly update the local checkout."""
-
-
-
-import os
-import shlex
-import sys
-
-BUILDBOT_PATH = os.path.realpath(os.path.join(
-    os.path.dirname(os.path.abspath(__file__)), os.pardir, os.pardir, os.pardir)
-)
-
-sys.path.append(os.path.join(BUILDBOT_PATH, 'common'))
-sys.path.append(os.path.join(BUILDBOT_PATH, 'site_config'))
-sys.path.append(os.path.join(BUILDBOT_PATH, 'third_party',
-                             'chromium_buildbot', 'scripts'))
-
-import gclient_utils
-from py.utils import git_utils
-from py.utils import misc
-from py.utils import shell_utils
-import skia_vars
-
-
-BUILDBOT_GIT_URL = skia_vars.GetGlobalVariable('buildbot_git_url')
-GOT_REVISION_PATTERN = 'Skiabot scripts updated to %s'
-
-
-def force_update():
-  with misc.ChDir(os.path.join(misc.BUILDBOT_PATH, os.pardir)):
-    # Run "gclient" before doing anything else to ensure that we get the
-    # necessary stuff installed.
-    gclient_utils.GClient()
-
-    # Be sure that we sync to the most recent commit.
-    buildbot_revision = None
-    try:
-      output = git_utils.GetRemoteMasterHash(BUILDBOT_GIT_URL)
-      if output:
-        buildbot_revision = shlex.split(output)[0]
-    except shell_utils.CommandFailedException:
-      pass
-    if not buildbot_revision:
-      buildbot_revision = 'origin/master'
-
-    gclient_utils.Sync(revisions=[('buildbot', buildbot_revision)],
-                       verbose=True, force=True)
-    got_revision = gclient_utils.GetCheckedOutHash()
-    print GOT_REVISION_PATTERN % got_revision
-
-    return gclient_utils.GetCheckedOutHash()
-
-
-if __name__ == '__main__':
-  force_update()