code: def DbDeleteClassAttribute(self, argin):
          
          self._log.debug("In DbDeleteClassAttribute()")
  
          if len(argin) < 2:
              self.warn_stream("DataBase::db_delete_class_attribute(): insufficient number of arguments ")
              th_exc(DB_IncorrectArguments,
                     "insufficient number of arguments to delete class attribute",
                     "DataBase::DeleteClassAttribute()")
  
          klass_name, attr_name = argin[:2]
  
          self.db.delete_class_attribute(klass_name, attr_name)
docs: delete a class attribute and all its properties from database
  
          :param argin: Str[0] = Tango class name
          Str[1] = Attribute name
          :type: tango.DevVarStringArray
          :return:
          :rtype: tango.DevVoid