code: def task_remove_user(self, *args, **kwargs):
          
          if not self.cur_task:
              return
          i = self.task_user_tablev.currentIndex()
          item = i.internalPointer()
          if item:
              user = item.internal_data()
              self.cur_task.users.remove(user)
              item.set_parent(None)
docs: Remove the selected user from the task
  
          :returns: None
          :rtype: None
          :raises: None