message: We don't really need to see the size of the mempool object we send in
  the getnetworkinfo output.
  The size is always 8 bytes, so there is no need to view the
  information.
diff: @@ -478,8 +478,6 @@ static UniValue GetGrapheneStats()
  obj.push_back(Pair("outbound_percent", graphenedata.OutBoundPercentToString()));
  obj.push_back(Pair("response_time", graphenedata.ResponseTimeToString()));
  obj.push_back(Pair("validation_time", graphenedata.ValidationTimeToString()));
  - obj.push_back(Pair("outbound_mempool_info", graphenedata.OutBoundMemPoolInfoToString()));
  - obj.push_back(Pair("inbound_mempool_info", graphenedata.InBoundMemPoolInfoToString()));
  obj.push_back(Pair("filter", graphenedata.FilterToString()));
  obj.push_back(Pair("iblt", graphenedata.IbltToString()));
  obj.push_back(Pair("rank", graphenedata.RankToString()));
  