Remove a wrong comment

Author: javiereguiluz

http_client.rst

@@ -1330,8 +1330,7 @@ components from the Packagist API in parallel::
     }
 
     $results = [];
-    // iterate through the responses and read their content;
-    // note: responses may complete in a different order than they were sent
+    // iterate through the responses and read their content
     foreach ($responses as $package => $response) {
         // process response data somehow ...
         $results[$package] = $response->toArray();