diff --git a/transport/internet/connection.go b/transport/internet/connection.go
index b526f746..2405ce1b 100644
--- a/transport/internet/connection.go
+++ b/transport/internet/connection.go
@@ -4,12 +4,6 @@ import (
 	"net"
 )
 
-type ConnectionHandler func(Connection)
-
 type Connection interface {
 	net.Conn
 }
-
-type SysFd interface {
-	SysFd() (int, error)
-}