Remove unused file from webkitpy

Tools/Scripts/webkitpy/common/system/fileset.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:
-#
-# 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 APPLE AND ITS 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 APPLE OR ITS 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.common.system.filesystem import FileSystem
-
-
-class FileSetFileHandle(object):
-    """Points to a file that resides in a file set"""
-    def __init__(self, fileset, filename, filesystem=None):
-        self._filename = filename
-        self._fileset = fileset
-        self._contents = None
-        self._filesystem = filesystem or FileSystem()
-
-    def __str__(self):
-        return "%s:%s" % (self._fileset, self._filename)
-
-    def close(self):
-        pass
-
-    def contents(self):
-        if self._contents is None:
-            self._contents = self._fileset.read(self._filename)
-        return self._contents
-
-    def save_to(self, path, filename=None):
-        if filename is None:
-            self._fileset.extract(self._filename, path)
-            return
-        with self._filesystem.mkdtemp() as temp_dir:
-            self._fileset.extract(self._filename, temp_dir)
-
-            src = self._filesystem.join(temp_dir, self._filename)
-            dest = self._filesystem.join(path, filename)
-            self._filesystem.copyfile(src, dest)
-
-    def delete(self):
-        self._fileset.delete(self._filename)
-
-    def name(self):
-        return self._filename
-
-    def splitext(self):
-        return self._filesystem.splitext(self.name())