chore: cleanup natTable's api

listener/socks/utils.go

@@ -4,7 +4,6 @@ import (
 	"net"
 
 	"github.com/Dreamacro/clash/common/pool"
-	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/transport/socks5"
 )
 
@@ -40,11 +39,3 @@ func (c *packet) Drop() {
 func (c *packet) InAddr() net.Addr {
 	return c.pc.LocalAddr()
 }
-
-func (c *packet) SetNatTable(natTable C.NatTable) {
-	// no need
-}
-
-func (c *packet) SetUdpInChan(in chan<- C.PacketAdapter) {
-	// no need
-}