rm old sample

Author: PatrickFarley

.openpublishing.redirection.json

@@ -36588,6 +36588,11 @@
       "redirect_url": "/azure/cognitive-services/Computer-vision/quickstarts-sdk/csharp-sdk",
       "redirect_document_id": false
     },
+    {
+      "source_path_from_root": "/articles/cognitive-services/Computer-vision/Tutorials/CSharpTutorial.md",
+      "redirect_url": "/azure/cognitive-services/Computer-vision/overview-image-analysis",
+      "redirect_document_id": false
+    },
     {
       "source_path_from_root": "/articles/cognitive-services/Content-Moderator/Review-Tool-User-Guide/Upload-Images.md",
       "redirect_url": "/azure/cognitive-services/content-moderator",