Issue 5844 - Remove redundant parentheses in buildtools

localeTools.py

 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 import re
 import os
 import sys
 import codecs
 import json
 import urlparse
@@ skipping 174 matching lines @@
             '\r\n{data}\r\n'
             '--{boundary}--\r\n'
         ).format(boundary=boundary,
                  name=name,
                  data=data.encode('utf-8'),
                  mimetype=mimetypes.guess_type(name)[0])
 
     return (
         StringIO(body),
         {
-            'Content-Type': ('multipart/form-data; boundary=' + boundary),
+            'Content-Type': 'multipart/form-data; boundary=' + boundary,
             'Content-Length': len(body)
         },
     )
 
 
 def updateTranslationMaster(localeConfig, metadata, dir, projectName, key):
     result = crowdin_request(projectName, 'info', key)
 
     existing = set(map(lambda f: f['name'], result['files']))
     add = []
@@ skipping 112 matching lines @@
     # Remove any extra files
     for dir, files in dirs.iteritems():
         baseDir = os.path.join(localeConfig['base_path'], dir)
         if not os.path.exists(baseDir):
             continue
         for file in os.listdir(baseDir):
             path = os.path.join(baseDir, file)
             valid_extension = file.endswith('.json')
             if os.path.isfile(path) and valid_extension and not file in files:
                 os.remove(path)