remove unused field on peer conf

models/proxy.go

@@ -40,7 +40,6 @@ type PeerConf struct {
 	ProxyListenPort  int          `json:"proxy_listen_port"`
 	IsExtClient      bool         `json:"is_ext_client"`
 	Address          net.IP       `json:"address"`
-	ExtInternalIp    net.IP       `json:"ext_internal_ip"`
 	IsRelayed        bool         `json:"is_relayed"`
 	RelayedTo        *net.UDPAddr `json:"relayed_to"`
 	NatType          string       `json:"nat_type"`