code: def delete_namespace(parsed_xml):
      
      if parsed_xml.getroot().tag.startswith('{'):
          root = parsed_xml.getroot().tag
          end_ns = root.find('}')
          remove_namespace(parsed_xml, root[1:end_ns])
      return parsed_xml
docs: Identifies the namespace associated with the root node of a XML document
      and removes that names from the document.
  
      :param parsed_xml: lxml.Etree object.
      :return: Returns the sources document with the namespace removed.