Deleted echo

Author: mmoreram

Diff for: src/Application.php

@@ -166,7 +166,7 @@ function (ServerRequestInterface $request) use ($requestHandler) {
                         if (!$this->silent) {
                             $serverResponseWithMessage->printMessage();
                         }
-echo 'X';
+                        
                         return $resolve($serverResponseWithMessage->getServerResponse());
                     };
 
@@ -213,4 +213,4 @@ private function print()
             echo '>' . PHP_EOL . PHP_EOL;
         }
     }
-}
+}