fix HttpClientAspect duplicated spans (#25)

Author: luizmanhani

src/Aspect/HttpClientAspect.php

@@ -39,7 +39,6 @@ class HttpClientAspect extends AbstractAspect
     use ExceptionAppender;
 
     public array $classes = [
-        Client::class . '::request',
         Client::class . '::requestAsync',
     ];