removed links to legacy docs

Author: asudbring

articles/aks/concepts-network.md

@@ -277,8 +277,6 @@ For more information on core Kubernetes and AKS concepts, see the following arti
 [service-types]: https://kubernetes.io/docs/concepts/services-networking/service/#publishing-services-service-types
 
 <!-- LINKS - Internal -->
-[aks-http-routing]: http-application-routing.md
-[aks-ingress-tls]: ./ingress-tls.md
 [aks-configure-kubenet-networking]: configure-kubenet.md
 [aks-configure-advanced-networking]: configure-azure-cni.md
 [aks-concepts-clusters-workloads]: concepts-clusters-workloads.md
@@ -293,7 +291,6 @@ For more information on core Kubernetes and AKS concepts, see the following arti
 [support-policies]: support-policies.md
 [limit-egress]: limit-egress-traffic.md
 [k8s-ingress]: https://kubernetes.io/docs/concepts/services-networking/ingress/
-[nginx-ingress]: ingress-basic.md
 [ip-preservation]: https://techcommunity.microsoft.com/t5/fasttrack-for-azure/how-client-source-ip-preservation-works-for-loadbalancer/ba-p/3033722#:~:text=Enable%20Client%20source%20IP%20preservation%201%20Edit%20loadbalancer,is%20the%20same%20as%20the%20source%20IP%20%28srjumpbox%29.
 [nsg-traffic]: ../virtual-network/network-security-group-how-it-works.md
 [azure-cni-aks]: configure-azure-cni.md