remove unused method from the ackhandler.Packet

internal/ackhandler/packet.go

@@ -25,18 +25,3 @@ type Packet struct {
 	isRetransmission        bool // we need a separate bool here because 0 is a valid packet number
 	retransmissionOf        protocol.PacketNumber
 }
-
-// GetFramesForRetransmission gets all the frames for retransmission
-func (p *Packet) GetFramesForRetransmission() []wire.Frame {
-	var fs []wire.Frame
-	for _, frame := range p.Frames {
-		switch frame.(type) {
-		case *wire.AckFrame:
-			continue
-		case *wire.StopWaitingFrame:
-			continue
-		}
-		fs = append(fs, frame)
-	}
-	return fs
-}