Removed one more old debugging message
Removed one more old debugging message

I forgot to squash this "received an RPC reply" in my earlier attempt to
clean up debugging messages we're no longer using.

Derecho-Project/derecho-unified,Derecho-Project/derecho-unified,Derecho-Project/derecho-unified,Derecho-Project/derecho-unified,Derecho-Project/derecho-unified