diff --git a/vendor/github.com/lucas-clemente/quic-go/internal/wire/header_parser.go b/vendor/github.com/lucas-clemente/quic-go/internal/wire/header_parser.go
deleted file mode 100644
index ce1ec0d9..00000000
--- a/vendor/github.com/lucas-clemente/quic-go/internal/wire/header_parser.go
+++ /dev/null
@@ -1,167 +0,0 @@
-package wire
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-
-	"github.com/lucas-clemente/quic-go/internal/protocol"
-	"github.com/lucas-clemente/quic-go/internal/qerr"
-	"github.com/lucas-clemente/quic-go/internal/utils"
-)
-
-// The InvariantHeader is the version independent part of the header
-type InvariantHeader struct {
-	IsLongHeader     bool
-	Version          protocol.VersionNumber
-	SrcConnectionID  protocol.ConnectionID
-	DestConnectionID protocol.ConnectionID
-
-	typeByte byte
-}
-
-// ParseInvariantHeader parses the version independent part of the header
-func ParseInvariantHeader(b *bytes.Reader, shortHeaderConnIDLen int) (*InvariantHeader, error) {
-	typeByte, err := b.ReadByte()
-	if err != nil {
-		return nil, err
-	}
-
-	h := &InvariantHeader{typeByte: typeByte}
-	h.IsLongHeader = typeByte&0x80 > 0
-
-	// If this is not a Long Header, it could either be a Public Header or a Short Header.
-	if !h.IsLongHeader {
-		var err error
-		h.DestConnectionID, err = protocol.ReadConnectionID(b, shortHeaderConnIDLen)
-		if err != nil {
-			return nil, err
-		}
-		return h, nil
-	}
-	// Long Header
-	v, err := utils.BigEndian.ReadUint32(b)
-	if err != nil {
-		return nil, err
-	}
-	h.Version = protocol.VersionNumber(v)
-	connIDLenByte, err := b.ReadByte()
-	if err != nil {
-		return nil, err
-	}
-	dcil, scil := decodeConnIDLen(connIDLenByte)
-	h.DestConnectionID, err = protocol.ReadConnectionID(b, dcil)
-	if err != nil {
-		return nil, err
-	}
-	h.SrcConnectionID, err = protocol.ReadConnectionID(b, scil)
-	if err != nil {
-		return nil, err
-	}
-	return h, nil
-}
-
-// Parse parses the version dependent part of the header
-func (iv *InvariantHeader) Parse(b *bytes.Reader, sentBy protocol.Perspective, ver protocol.VersionNumber) (*Header, error) {
-	if iv.IsLongHeader {
-		if iv.Version == 0 { // Version Negotiation Packet
-			return iv.parseVersionNegotiationPacket(b)
-		}
-		return iv.parseLongHeader(b, sentBy, ver)
-	}
-	return iv.parseShortHeader(b, ver)
-}
-
-func (iv *InvariantHeader) toHeader() *Header {
-	return &Header{
-		IsLongHeader:     iv.IsLongHeader,
-		DestConnectionID: iv.DestConnectionID,
-		SrcConnectionID:  iv.SrcConnectionID,
-		Version:          iv.Version,
-	}
-}
-
-func (iv *InvariantHeader) parseVersionNegotiationPacket(b *bytes.Reader) (*Header, error) {
-	h := iv.toHeader()
-	if b.Len() == 0 {
-		return nil, qerr.Error(qerr.InvalidVersionNegotiationPacket, "empty version list")
-	}
-	h.IsVersionNegotiation = true
-	h.SupportedVersions = make([]protocol.VersionNumber, b.Len()/4)
-	for i := 0; b.Len() > 0; i++ {
-		v, err := utils.BigEndian.ReadUint32(b)
-		if err != nil {
-			return nil, qerr.InvalidVersionNegotiationPacket
-		}
-		h.SupportedVersions[i] = protocol.VersionNumber(v)
-	}
-	return h, nil
-}
-
-func (iv *InvariantHeader) parseLongHeader(b *bytes.Reader, sentBy protocol.Perspective, v protocol.VersionNumber) (*Header, error) {
-	h := iv.toHeader()
-	h.Type = protocol.PacketType(iv.typeByte & 0x7f)
-
-	if h.Type != protocol.PacketTypeInitial && h.Type != protocol.PacketTypeRetry && h.Type != protocol.PacketType0RTT && h.Type != protocol.PacketTypeHandshake {
-		return nil, qerr.Error(qerr.InvalidPacketHeader, fmt.Sprintf("Received packet with invalid packet type: %d", h.Type))
-	}
-
-	if h.Type == protocol.PacketTypeRetry {
-		odcilByte, err := b.ReadByte()
-		if err != nil {
-			return nil, err
-		}
-		odcil := decodeSingleConnIDLen(odcilByte & 0xf)
-		h.OrigDestConnectionID, err = protocol.ReadConnectionID(b, odcil)
-		if err != nil {
-			return nil, err
-		}
-		h.Token = make([]byte, b.Len())
-		if _, err := io.ReadFull(b, h.Token); err != nil {
-			return nil, err
-		}
-		return h, nil
-	}
-
-	if h.Type == protocol.PacketTypeInitial {
-		tokenLen, err := utils.ReadVarInt(b)
-		if err != nil {
-			return nil, err
-		}
-		if tokenLen > uint64(b.Len()) {
-			return nil, io.EOF
-		}
-		h.Token = make([]byte, tokenLen)
-		if _, err := io.ReadFull(b, h.Token); err != nil {
-			return nil, err
-		}
-	}
-
-	pl, err := utils.ReadVarInt(b)
-	if err != nil {
-		return nil, err
-	}
-	h.Length = protocol.ByteCount(pl)
-	pn, pnLen, err := utils.ReadVarIntPacketNumber(b)
-	if err != nil {
-		return nil, err
-	}
-	h.PacketNumber = pn
-	h.PacketNumberLen = pnLen
-
-	return h, nil
-}
-
-func (iv *InvariantHeader) parseShortHeader(b *bytes.Reader, v protocol.VersionNumber) (*Header, error) {
-	h := iv.toHeader()
-	h.KeyPhase = int(iv.typeByte&0x40) >> 6
-
-	pn, pnLen, err := utils.ReadVarIntPacketNumber(b)
-	if err != nil {
-		return nil, err
-	}
-	h.PacketNumber = pn
-	h.PacketNumberLen = pnLen
-
-	return h, nil
-}