Reword comment.

sdk/src/main/java/io/opentelemetry/sdk/trace/export/SpanWatcherProcessor.java

@@ -187,10 +187,7 @@ private static Thread newThread(Runnable runnable) {
   }
 
   // Worker is a thread that batches multiple spans and calls the registered SpanExporter to export
-  // the data.
-  //
-  // The list of batched data is protected by an explicit monitor object which ensures full
-  // concurrency.
+  // the data repeatedly, every reportIntervalMillis.
   private static final class Worker implements Runnable {
     private static final Logger logger = Logger.getLogger(Worker.class.getName());
     private final SpanExporter spanExporter;