Remove redundant NaCl SDK buildbot run script

scripts/slave/chromium/nacl_sdk_buildbot_run.py

-#!/usr/bin/env python
-# Copyright (c) 2012 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""Entry point for both build and try bots.
-
-To determine which commands to run, the script inspects the given build
-properties passed in from buildbot (via command line options).
-"""
-
-import optparse
-import os
-import sys
-
-from common import chromium_utils
-
-
-SDK_BUILDER_MAP = {
-    'linux-sdk-mono32':
-        [sys.executable, 'nacl-mono-buildbot.py'],
-    'linux-sdk-mono64':
-        [sys.executable, 'nacl-mono-buildbot.py'],
-    'DEFAULT':
-        [sys.executable, 'buildbot_run.py'],
-}
-
-
-def main():
-  option_parser = optparse.OptionParser()
-  chromium_utils.AddPropertiesOptions(option_parser)
-  (options, args) = option_parser.parse_args()
-
-  buildername = options.build_properties.get('buildername', '')
-  cmd = SDK_BUILDER_MAP.get(buildername) or SDK_BUILDER_MAP.get('DEFAULT')
-  build_tools_dir = chromium_utils.FindUpward(
-      os.getcwd(), 'src', 'native_client_sdk', 'src', 'build_tools')
-  os.chdir(build_tools_dir)
-  # Remove BOTO_CONFIG from the environment -- we want to use the NaCl .boto
-  # file that has access to gs://nativeclient-mirror.
-  if 'AWS_CREDENTIAL_FILE' in os.environ:
-    del os.environ['AWS_CREDENTIAL_FILE']
-  if 'BOTO_CONFIG' in os.environ:
-    del os.environ['BOTO_CONFIG']
-  return chromium_utils.RunCommand(cmd + args)
-
-
-if __name__ == '__main__':
-  sys.exit(main())