Revert "Merge more Kernel infrastructure from kernel_sdk SDK fork."

runtime/tools/concatenate_patches.py

-#!/usr/bin/env python
-# Copyright (c) 2016, 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.
-
-from optparse import OptionParser
-
-def writePatch(output_file_name, input_file_names):
-  dart_file_names = filter(lambda name: name.endswith('.dart'),
-                           input_file_names)
-  with open(output_file_name, 'w') as output_file:
-    for dart_file_name in dart_file_names:
-      with open(dart_file_name, 'r') as dart_file:
-        output_file.write(dart_file.read())
-
-
-def main():
-  parser = OptionParser()
-  parser.add_option('--output', action='store', type='string',
-                    help='output file path')
-  (options, args) = parser.parse_args()
-  if not options.output:
-    parser.error('missing --output option\n')
-  if len(args) == 0:
-    parser.error('no input files given\n')
-  writePatch(options.output, args)
-
-
-if __name__ == '__main__':
-  main()