'Remove the prefix from the encoded folder id.
:param encoded_folder_id: encoded id of the Folder object with \'F\' prepended
:type  encoded_folder_id: string
:returns:  encoded Folder id without the \'F\' prefix
:rtype:    string
:raises: MalformedId'

def cut_the_prefix(self, encoded_folder_id):

    if (((len(encoded_folder_id) % 16) == 1) and encoded_folder_id.startswith('F')):
        cut_id = encoded_folder_id[1:]
    else:
        raise MalformedId(('Malformed    folder    id    (    %s    )    specified,    unable    to    decode.' % str(encoded_folder_id)))
    return cut_id
