p2p: add RPCAddress to NodeInfoOther.String() (#2442)

- remove second AminoVersion from
https://github.com/tendermint/tendermint/pull/2426/files#diff-f2fefc7a06ea0d1e0a910196901e50aaR86

Refs #2433

node/node.go

@@ -775,6 +775,7 @@ func makeNodeInfo(
 			ConsensusVersion: cs.Version,
 			RPCVersion:       fmt.Sprintf("%v/%v", rpc.Version, rpccore.Version),
 			TxIndex:          txIndexerStatus,
+			RPCAddress:       config.RPC.ListenAddress,
 		},
 	}
 
@@ -782,9 +783,6 @@ func makeNodeInfo(
 		nodeInfo.Channels = append(nodeInfo.Channels, pex.PexChannel)
 	}
 
-	rpcListenAddr := config.RPC.ListenAddress
-	nodeInfo.Other.RPCAddress = rpcListenAddr
-
 	lAddr := config.P2P.ExternalAddress
 
 	if lAddr == "" {