add redirect and delete the unused file

Author: v-krghan

.openpublishing.redirection.json

@@ -41886,6 +41886,11 @@
       "redirect_url": "/azure/mysql/reference-stored-procedures",
       "redirect_document_id": false
     },
+    {
+      "source_path": "articles/iot-accelerators/iot-accelerators-architecture-overview.md",
+      "redirect_url": "https://docs.microsoft.com/en-us/azure/architecture/reference-architectures/iot/",
+      "redirect_document_id": false
+    },
     {
       "source_path": "articles/mariadb/reference-data-in-stored-procedures.md",
       "redirect_url": "/azure/mariadb/reference-stored-procedures",

articles/iot-accelerators/about-iot-accelerators.md

@@ -83,7 +83,7 @@ The original solution accelerators were written using .NET using a model-view-co
 | Connected Factory      | MVC           | [.NET](https://github.com/Azure/azure-iot-connected-factory)          |
 | Device Simulation      | Microservices | [.NET](https://github.com/Azure/device-simulation-dotnet)          |
 
-To learn more about the microservices architecture, see [Introduction to the Azure IoT reference architecture](iot-accelerators-architecture-overview.md).
+To learn more about the microservices architecture, see [Introduction to the Azure IoT reference architecture](https://docs.microsoft.com/en-us/azure/architecture/reference-architectures/iot/).
 
 ## Deployment options