Revert "Add metrics for nodes online and offline (#11050)"

This reverts commit f60bbdf86b.

cmd/notification.go

@@ -51,8 +51,8 @@ type NotificationSys struct {
 	targetResCh                chan event.TargetIDResult
 	bucketRulesMap             map[string]event.RulesMap
 	bucketRemoteTargetRulesMap map[string]map[event.TargetID]event.RulesMap
-	peerClients                []*peerRESTClient // Excludes self
-	allPeerClients             []*peerRESTClient // Includes nil client for self
+	peerClients                []*peerRESTClient
+	allPeerClients             []*peerRESTClient
 }
 
 // GetARNList - returns available ARNs.
@@ -1288,21 +1288,6 @@ func NewNotificationSys(endpoints EndpointServerPools) *NotificationSys {
 	}
 }
 
-// GetPeerOnlineCount gets the count of online and offline nodes.
-func GetPeerOnlineCount() (nodesOnline, nodesOffline int) {
-	nodesOnline = 1
-	nodesOffline = 0
-	servers := globalNotificationSys.ServerInfo()
-	for _, s := range servers {
-		if s.State == "online" {
-			nodesOnline++
-			continue
-		}
-		nodesOffline++
-	}
-	return
-}
-
 type eventArgs struct {
 	EventName    event.Name
 	BucketName   string