YARN-10570. Remove experimental warning message from fs2cs. Contributed by Peter Bacsko

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/converter/FSConfigToCSConfigConverter.java

@@ -78,10 +78,6 @@ public class FSConfigToCSConfigConverter {
   private static final String FAIR_SCHEDULER_XML =
       "fair-scheduler.xml";
 
-  public static final String WARNING_TEXT =
-      "WARNING: This feature is experimental and not intended " +
-          "for production use!";
-
   private Resource clusterResource;
   private boolean preemptionEnabled = false;
   private int queueMaxAppsDefault;
@@ -225,8 +221,6 @@ public class FSConfigToCSConfigConverter {
 
   @VisibleForTesting
   void convert(Configuration inputYarnSiteConfig) throws Exception {
-    System.out.println(WARNING_TEXT);
-
     // initialize Fair Scheduler
     RMContext ctx = new RMContextImpl();
     PlacementManager placementManager = new PlacementManager();