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

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

Index: Tools/Scripts/webkitpy/tool/steps/addsvnmimetypeforpng_unittest.py
diff --git a/Tools/Scripts/webkitpy/tool/steps/addsvnmimetypeforpng_unittest.py b/Tools/Scripts/webkitpy/tool/steps/addsvnmimetypeforpng_unittest.py
deleted file mode 100644
index 991b95b877c9215cee17c28f15e6e3ac7a651fd5..0000000000000000000000000000000000000000
--- a/Tools/Scripts/webkitpy/tool/steps/addsvnmimetypeforpng_unittest.py
+++ /dev/null
@@ -1,58 +0,0 @@
-# Copyright (C) 2012 Balazs Ankes (bank@inf.u-szeged.hu) University of Szeged
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1.  Redistributions of source code must retain the above copyright
-#     notice, this list of conditions and the following disclaimer.
-# 2.  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.
-#
-# 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.
-
-import webkitpy.thirdparty.unittest2 as unittest
-
-from webkitpy.tool.steps.addsvnmimetypeforpng import AddSvnMimetypeForPng
-from webkitpy.common.system.filesystem_mock import MockFileSystem
-from webkitpy.tool.mocktool import MockOptions, MockTool
-from webkitpy.common.system.systemhost_mock import MockSystemHost
-from webkitpy.common.system.outputcapture import OutputCapture
-
-
-class MockSCMDetector(object):
-
-    def __init__(self, scm):
-        self._scm = scm
-
-    def display_name(self):
-        return self._scm
-
-
-class AddSvnMimetypeForPngTest(unittest.TestCase):
-    def test_run(self):
-        capture = OutputCapture()
-        options = MockOptions(git_commit='MOCK git commit')
-
-        files = {'/Users/mock/.subversion/config': 'enable-auto-props = yes\n*.png = svn:mime-type=image/png'}
-        fs = MockFileSystem(files)
-        scm = MockSCMDetector('git')
-
-        step = AddSvnMimetypeForPng(MockTool(), options, MockSystemHost(os_name='linux', filesystem=fs), scm)
-        state = {
-            "changed_files": ["test.png", "test.txt"],
-        }
-        try:
-            capture.assert_outputs(self, step.run, [state])
-        except SystemExit, e:
-            self.assertEqual(e.code, 1)