Revert "Capture network device info in health report" (#18241)

Introducing a new version of healthinfo struct for adding this info is
not correct. It needs to be implemented differently without adding a new
version.

This reverts commit 8737025d940f80360ed4b3686b332db5156f6659.

cmd/notification.go

@@ -701,31 +701,6 @@ func (sys *NotificationSys) GetCPUs(ctx context.Context) []madmin.CPUs {
 	return reply
 }
 
-// GetNetInfo - Network information
-func (sys *NotificationSys) GetNetInfo(ctx context.Context) []madmin.NetInfo {
-	reply := make([]madmin.NetInfo, len(sys.peerClients))
-
-	g := errgroup.WithNErrs(len(sys.peerClients))
-	for index, client := range sys.peerClients {
-		if client == nil {
-			continue
-		}
-		index := index
-		g.Go(func() error {
-			var err error
-			reply[index], err = sys.peerClients[index].GetNetInfo(ctx)
-			return err
-		}, index)
-	}
-
-	for index, err := range g.Wait() {
-		if err != nil {
-			sys.addNodeErr(&reply[index], sys.peerClients[index], err)
-		}
-	}
-	return reply
-}
-
 // GetPartitions - Disk partition information
 func (sys *NotificationSys) GetPartitions(ctx context.Context) []madmin.Partitions {
 	reply := make([]madmin.Partitions, len(sys.peerClients))