remove acknodealy setting entry

transport/internet/kcp/config.go

@@ -4,7 +4,6 @@ type Config struct {
 	Mtu    int // Maximum transmission unit
 	Sndwnd int // Sending window size
 	Rcvwnd int // Receiving window size
-	Acknodelay bool // Acknoledge without delay
 }
 
 func (this *Config) Apply() {
@@ -16,7 +15,6 @@ func DefaultConfig() Config {
 		Mtu:    1350,
 		Sndwnd: 1024,
 		Rcvwnd: 1024,
-		Acknodelay: true,
 	}
 }