removed unused consts

Signed-off-by: Dmitri Dolguikh <dmitri.external@netbird.io>

util/wsproxy/server/proxy.go

@@ -3,7 +3,6 @@ package server
 import (
 	"net/http"
 	"sync/atomic"
-	"time"
 
 	"github.com/coder/websocket"
 	log "github.com/sirupsen/logrus"
@@ -12,11 +11,6 @@ import (
 	"github.com/netbirdio/netbird/util/wsproxy"
 )
 
-const (
-	bufferSize = 32 * 1024
-	ioTimeout  = 5 * time.Second
-)
-
 // Config contains the configuration for the WebSocket proxy.
 type Config struct {
 	Handler         http.Handler