Update service_name.json | remove old mappings (#30765)

Author: dbradish-microsoft

src/azure-cli/service_name.json

@@ -189,11 +189,6 @@
     "AzureServiceName": "Resource Manager",
     "URL": "https://learn.microsoft.com/azure/azure-resource-manager/templates/template-tutorial-deployment-script"
   },
-  {
-    "Command": "az deploymentmanager",
-    "AzureServiceName": "Resource Manager",
-    "URL": "https://learn.microsoft.com/azure/azure-resource-manager/templates/deployment-manager-overview"
-  },
   {
     "Command": "az stack",
     "AzureServiceName": "Resource Manager",
@@ -369,11 +364,6 @@
     "AzureServiceName": "Networking",
     "URL": "https://azure.microsoft.com/product-categories/networking"
   },
-  {
-    "Command": "az openshift",
-    "AzureServiceName": "Red Hat OpenShift",
-    "URL": "https://learn.microsoft.com/azure/openshift"
-  },
   {
     "Command": "az pipelines",
     "AzureServiceName": "DevOps",