remove unused code

Author: sualko

src/Http/Transport/CurlTransport.php

@@ -129,14 +129,6 @@ public function request(TransportRequest $request): TransportResponse
         return new TransportResponse($data, $sessionId);
     }
 
-    private static function buildCookieOptions(string $cookieFilePath): array
-    {
-        return [
-            CURLOPT_COOKIEFILE => $cookieFilePath,
-            CURLOPT_COOKIEJAR  => $cookieFilePath,
-        ];
-    }
-
     private static function buildPostOptions(TransportRequest $request): array
     {
         $options = [];