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

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

Index: Tools/Scripts/webkitpy/tool/steps/addsvnmimetypeforpng.py
diff --git a/Tools/Scripts/webkitpy/tool/steps/addsvnmimetypeforpng.py b/Tools/Scripts/webkitpy/tool/steps/addsvnmimetypeforpng.py
deleted file mode 100644
index 0ef0fed4629c5e3ff7e9f99f1e1cfba35fd377a4..0000000000000000000000000000000000000000
--- a/Tools/Scripts/webkitpy/tool/steps/addsvnmimetypeforpng.py
+++ /dev/null
@@ -1,80 +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 logging
-
-from webkitpy.tool.steps.abstractstep import AbstractStep
-from webkitpy.common import checksvnconfigfile
-from webkitpy.common.checkout.scm.detection import SCMDetector
-from webkitpy.common.system.systemhost import SystemHost
-
-_log = logging.getLogger(__name__)
-
-
-class AddSvnMimetypeForPng(AbstractStep):
-    def __init__(self, tool, options, host=None, scm=None):
-        self._tool = tool
-        self._options = options
-        self._host = host or SystemHost()
-        self._fs = self._host.filesystem
-        self._detector = scm or SCMDetector(self._fs, self._host.executive).detect_scm_system(self._fs.getcwd())
-
-    def run(self, state):
-        png_files = self._check_pngs(self._changed_files(state))
-
-        if png_files:
-            detection = self._detector.display_name()
-
-            if detection == "git":
-                (file_missing, autoprop_missing, png_missing) = checksvnconfigfile.check(self._host, self._fs)
-                config_file_path = checksvnconfigfile.config_file_path(self._host, self._fs)
-
-                if file_missing:
-                    _log.info("There is no SVN config file. The svn:mime-type of pngs won't set.")
-                    if not self._tool.user.confirm("Are you sure you want to continue?", default="n"):
-                        self._exit(1)
-                elif autoprop_missing and png_missing:
-                    _log.info(checksvnconfigfile.errorstr_autoprop(config_file_path) + checksvnconfigfile.errorstr_png(config_file_path))
-                    if not self._tool.user.confirm("Do you want to continue?", default="n"):
-                        self._exit(1)
-                elif autoprop_missing:
-                    _log.info(checksvnconfigfile.errorstr_autoprop(config_file_path))
-                    if not self._tool.user.confirm("Do you want to continue?", default="n"):
-                        self._exit(1)
-                elif png_missing:
-                    _log.info(checksvnconfigfile.errorstr_png(config_file_path))
-                    if not self._tool.user.confirm("Do you want to continue?", default="n"):
-                        self._exit(1)
-
-            elif detection == "svn":
-                for filename in png_files:
-                    if self._detector.exists(filename) and self._detector.propget('svn:mime-type', filename) != 'image/png':
-                        print "Adding image/png mime-type to %s" % filename
-                        self._detector.propset('svn:mime-type', 'image/png', filename)
-
-    def _check_pngs(self, changed_files):
-        png_files = []
-        for filename in changed_files:
-            if filename.endswith('.png'):
-                png_files.append(filename)
-        return png_files