Remove encoding='utf-8' parameter.

app/models/package_version.py

 # Copyright (c) 2012, 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.
 
 import copy
 import json
 import tarfile
 
 from google.appengine.api import memcache
 from google.appengine.ext import db
@@ skipping 72 matching lines @@
 
       uploader/readme/changelog -> uploaderEmail/readmeString/changelogString
       """
       if self.uploader is None:
         self.uploaderEmail = None
       else:
         self.uploaderEmail = self.uploader.email()
 
       if self.readme:
         self.readmeFilename = self.readme.filename
-        self.readmeContent = db.Text(self.readme.text, encoding="utf-8")
+        self.readmeContent = db.Text(self.readme.text)
 
       if self.changelog:
         self.changelogFilename = self.changelog.filename
-        self.changelogContent = db.Text(self.changelog.text, encoding="utf-8")
+        self.changelogContent = db.Text(self.changelog.text)
 
     @classmethod
     def new(cls, **kwargs):
         """Construct a new package version.
 
         Unlike __init__, this infers some properties from others. In particular:
 
         - The version is inferred from the pubspec.
         - The key name is set to the version.
         - The parent entity is set to the package.
@@ skipping 208 matching lines @@
 
         if full:
             value.update({
                 'created': self.created.isoformat(),
                 'downloads': self.downloads,
                 'libraries': self.libraries,
                 'uploader': self.uploader.email()
             })
 
         return value