Remove unneccessary setting of simile fieldds

Author: LZD-PratyushBhatt

helix-core/src/main/java/org/apache/helix/manager/zk/ZKHelixAdmin.java

@@ -955,7 +955,6 @@ public boolean isInMaintenanceMode(String clusterName) {
       return false;
     }
 
-    // Check if there are any maintenance reasons active
     return signal.hasMaintenanceReasons();
   }
 

helix-core/src/main/java/org/apache/helix/model/MaintenanceSignal.java

@@ -169,11 +169,6 @@ public void addMaintenanceReason(String reason, long timestamp, TriggeringEntity
 
     updateReasonsListField(reasons);
     LOG.debug("After addition: Reasons list contains {} entries", reasons.size());
-
-    // Update all the simpleFields for backward compatibility
-    setReason(reason);
-    setTimestamp(timestamp);
-    setTriggeringEntity(triggeringEntity);
   }
 
   /**