Remove sysout

Author: acogoluegnes

src/test/java/com/rabbitmq/stream/impl/AuthenticationTest.java

@@ -134,18 +134,7 @@ void updateSecretShouldSucceedWithNewCorrectPassword() {
     try {
       addUser(username, password);
       setPermissions(username, "/", "^stream.*$");
-      Client client =
-          cf.get(
-              new Client.ClientParameters()
-                  .username("stream")
-                  .password(username)
-                  .shutdownListener(
-                      new Client.ShutdownListener() {
-                        @Override
-                        public void handle(Client.ShutdownContext context) {
-                          System.out.println("shutdown");
-                        }
-                      }));
+      Client client = cf.get(new Client.ClientParameters().username("stream").password(username));
       changePassword(username, newPassword);
       // OK
       client.authenticate(credentialsProvider(username, newPassword));