net/wsconn: remove homegrown wrapper for turning a websocket.Conn into a net.Conn

The one from the nhooyr/websocket package seems to work equally well.

Signed-off-by: Mihai Parparita <mihai@tailscale.com>

control/controlhttp/server.go

@@ -14,7 +14,6 @@ import (
 	"nhooyr.io/websocket"
 	"tailscale.com/control/controlbase"
 	"tailscale.com/net/netutil"
-	"tailscale.com/net/wsconn"
 	"tailscale.com/types/key"
 )
 
@@ -106,7 +105,7 @@ func acceptWebsocket(ctx context.Context, w http.ResponseWriter, r *http.Request
 		return nil, fmt.Errorf("decoding base64 handshake parameter: %v", err)
 	}
 
-	conn := wsconn.New(c)
+	conn := websocket.NetConn(ctx, c, websocket.MessageBinary)
 	nc, err := controlbase.Server(ctx, conn, private, init)
 	if err != nil {
 		conn.Close()