Delete OAOAI article & redirect

Author: msakande

articles/ai-foundry/.openpublishing.redirection.ai-studio.json

@@ -913,6 +913,11 @@
             "redirect_url": "/azure/ai-studio/how-to/data-add",
             "redirect_document_id": false
         },
+        {
+            "source_path_from_root": "/articles/ai-foundry/openai/how-to/manage-costs.md",
+            "redirect_url": "/azure/ai-foundry/foundry-models/how-to/manage-costs",
+            "redirect_document_id": true
+        },
         {
             "source_path_from_root": "/articles/ai-studio/how-to/simulator-interaction-data.md",
             "redirect_url": "/azure/ai-studio/how-to/data-add",