remove useless code, compile warning.

lichao

2021-06-03 b674aecae951c1f83e07f80956160fadf331d026

 src/defs.cpp

@@ -277,7 +277,7 @@
std::string BHomeShmName()
{
   auto bhome_meta = Ptr<BHomeMetaInfo>(kShmMetaInfoFixedAddress + Addr(BHomeMetaShm().get_address()));
   return "bhome_shmq_id_" + std::to_string(bhome_meta->shm_id_.load());
   return "bhshmq_sid_" + std::to_string(bhome_meta->shm_id_.load());
}

SharedMemory &BHomeShm()