update redirect file

Author: HollyCl

.openpublishing.redirection.operator-5g-core.json

@@ -15,11 +15,6 @@
             "redirect_url": "/azure/operator-5g-core/how-to-deploy-observability",
             "redirect_document_id": false
         },
-        {
-            "source_path_from_root": "/articles/operator-5g-core/quickstart-complete-prerequisites-deploy-azure-kubernetes-service.md",
-            "redirect_url": "/azure/operator-5g-core/quickstart-complete-prerequisites-deploy-nexus-azure-kubernetes-service",
-            "redirect_document_id": false
-        },
         {
             "source_path_from_root": "/articles/operator-5g-core/how-to-complete-prerequisites-deploy-nexus-azure-kubernetes-service.md",
             "redirect_url": "/azure/operator-5g-core/quickstart-complete-prerequisites-deploy-nexus-azure-kubernetes-service",