<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 async def delete_group_memory(self, memory_id):
 """Delete group memory."""

        act = self.service.action("X_DeleteGroupMemory")
        res = await act.async_call(MemoryID=memory_id)