Build Tools Cleanup

tools/create_windows_installer.py

 #!/usr/bin/env python
 #
-# Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+# Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # A script to generate a windows installer for the editor bundle.
 # As input the script takes a zip file, a version and the location
 # to store the resulting msi file in.
 #
 # Usage: ./tools/create_windows_installer.py --version <version>
 #            --zip_file_location <zip_file> --msi_location <output>
 #            [--wix_bin <wix_bin_location>]
 #            [--print_wxs]
 #
 # This script assumes that wix is either in path or passed in as --wix_bin.
 # You can get wix from http://wixtoolset.org/.
 
 import optparse
 import os
-import shutil
 import subprocess
 import sys
 import utils
 import zipfile
 
 # This should _never_ change, please don't change this value.
 UPGRADE_CODE = '7bacdc33-2e76-4f36-a206-ea58220c0b44'
 
 # The content of the xml
 xml_content = []
@@ skipping 351 matching lines @@
         # We have only one feature and that consist of all the
         # files=components we have listed above"
         ComponentRefs()
     xml = GetContent()
     if options.print_wxs:
       print xml
     GenerateInstaller(xml, options, temp_dir)
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))