Remove committer list, bugzilla, watchlist code and transitive closure of stuff.

Tools/Scripts/webkitpy/common/checkout/scm/scm_unittest.py

 # Copyright (C) 2009 Google Inc. All rights reserved.
 # Copyright (C) 2009 Apple Inc. All rights reserved.
 # Copyright (C) 2011 Daniel Bates (dbates@intudata.com). 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.
@@ skipping 28 matching lines @@
 import sys
 import subprocess
 import tempfile
 import time
 import unittest2 as unittest
 import urllib
 import shutil
 
 from datetime import date
 from webkitpy.common.checkout.checkout import Checkout
-from webkitpy.common.config.committers import Committer  # FIXME: This should not be needed
-from webkitpy.common.net.bugzilla import Attachment # FIXME: This should not be needed
 from webkitpy.common.system.executive import Executive, ScriptError
 from webkitpy.common.system.filesystem_mock import MockFileSystem
 from webkitpy.common.system.outputcapture import OutputCapture
 from webkitpy.common.system.executive_mock import MockExecutive
 from .git import Git, AmbiguousCommitError
 from .detection import detect_scm_system
 from .scm import SCM, CheckoutNeedsUpdate, commit_error_handler, AuthenticationError
 from .svn import SVN
 
 
@@ skipping 1578 matching lines @@
         scm = self.make_scm()
         scm.find_checkout_root = lambda path: ''
         scm._run_git = lambda args: 'Date: 2013-02-08 08:05:49 +0000'
         self.assertEqual(scm.timestamp_of_revision('some-path', '12345'), '2013-02-08T08:05:49Z')
 
         scm._run_git = lambda args: 'Date: 2013-02-08 01:02:03 +0130'
         self.assertEqual(scm.timestamp_of_revision('some-path', '12345'), '2013-02-07T23:32:03Z')
 
         scm._run_git = lambda args: 'Date: 2013-02-08 01:55:21 -0800'
         self.assertEqual(scm.timestamp_of_revision('some-path', '12345'), '2013-02-08T09:55:21Z')