chore: remove tfo windows support

Golang officially decided not to open `internal/poll.execIO` to third-party libraries after 1.23 was released, so we can only choose to remove tfo support on the Windows platform.

component/dialer/tfo.go

@@ -5,12 +5,8 @@ import (
 	"io"
 	"net"
 	"time"
-
-	"github.com/metacubex/tfo-go"
 )
 
-var DisableTFO = false
-
 type tfoConn struct {
 	net.Conn
 	closed bool
@@ -124,16 +120,3 @@ func (c *tfoConn) ReaderReplaceable() bool {
 func (c *tfoConn) WriterReplaceable() bool {
 	return c.Conn != nil
 }
-
-func dialTFO(ctx context.Context, netDialer net.Dialer, network, address string) (net.Conn, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), DefaultTCPTimeout)
-	dialer := tfo.Dialer{Dialer: netDialer, DisableTFO: false}
-	return &tfoConn{
-		dialed: make(chan bool, 1),
-		cancel: cancel,
-		ctx:    ctx,
-		dialFn: func(ctx context.Context, earlyData []byte) (net.Conn, error) {
-			return dialer.DialContext(ctx, network, address, earlyData)
-		},
-	}, nil
-}