Remove a bunch of unused webkitpy code from tool/, common/checkout/ and common/config/

Tools/Scripts/webkitpy/tool/steps/postdiff.py

-# Copyright (C) 2010 Google Inc. All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-from webkitpy.tool.steps.abstractstep import AbstractStep
-from webkitpy.tool.steps.options import Options
-
-
-class PostDiff(AbstractStep):
-    @classmethod
-    def options(cls):
-        return AbstractStep.options() + [
-            Options.description,
-            Options.comment,
-            Options.review,
-            Options.request_commit,
-            Options.open_bug,
-        ]
-
-    def run(self, state):
-        diff = self.cached_lookup(state, "diff")
-        description = self._options.description or "Patch"
-        comment_text = self._options.comment
-        bug_id = state["bug_id"]
-
-        self._tool.bugs.add_patch_to_bug(bug_id, diff, description, comment_text=comment_text, mark_for_review=self._options.review, mark_for_commit_queue=self._options.request_commit)
-        if self._options.open_bug:
-            self._tool.user.open_url(self._tool.bugs.bug_url_for_bug_id(bug_id))