Remove noisy logging

Author: nicktindall

server/src/main/java/org/elasticsearch/threadpool/ThreadPool.java

@@ -617,12 +617,8 @@ public void shutdown() {
             if (executor.executor() instanceof ThreadPoolExecutor) {
                 closeMetrics(executor);
                 executor.executor().shutdown();
-                logger.info("Shutting down pool [{}]", executor.info.getName());
             } else if (executor.executor() instanceof EsExecutorServiceDecorator decorator) {
-                logger.info("Shutting down virtual pool [{}]", executor.info.getName());
                 decorator.shutdown();
-            } else {
-                logger.warn("unknown executor type [{}]", executor.executor().getClass().getName());
             }
         }
     }