Error code standardization

internal/rpc/msg/server.go

@@ -27,6 +27,7 @@ type msgServer struct {
 	*rpcserver.RpcServer
 	MsgInterface controller.MsgInterface
 	Group        *check.GroupChecker
+	User         *check.UserCheck
 }
 
 type deleteMsg struct {

internal/rpc/user/user.go

@@ -23,8 +23,6 @@ import (
 )
 
 type userServer struct {
-	rpcPort         int
-	rpcRegisterName string
 	*rpcserver.RpcServer
 	controller.UserInterface
 }