Removed some commented code in the forms Media class.

        for name in MEDIA_TYPES:

            getattr(self, 'add_' + name)(media_attrs.get(name, None))

        # Any leftover attributes must be invalid.

        # if media_attrs != {}:

        #     raise TypeError("'class Media' has invalid attribute(s): %s" % ','.join(media_attrs.keys()))

    def __str__(self):

        return self.render()