Remove deprecated Fission Nats connector (#2403)

We are removing Fission deprecated Nats connector and
planning to adopt Keda going forward to have better
delegated functionality and more rich support.

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

pkg/fission-cli/cmd/support/resources/crd.go

@@ -113,7 +113,7 @@ func (res CrdDumper) Dump(dumpDir string) {
 	case CrdMessageQueueTrigger:
 		var triggers []fv1.MessageQueueTrigger
 
-		for _, mqType := range []string{fv1.MessageQueueTypeNats, fv1.MessageQueueTypeASQ, fv1.MessageQueueTypeKafka} {
+		for _, mqType := range []string{fv1.MessageQueueTypeASQ, fv1.MessageQueueTypeKafka} {
 			l, err := res.client.V1().MessageQueueTrigger().List(mqType, metav1.NamespaceAll)
 			if err != nil {
 				console.Warn(fmt.Sprintf("Error getting %v list: %v", res.crdType, err))