remove duplicate line

Author: duongau

.openpublishing.redirection.json

@@ -1990,11 +1990,6 @@
       "redirect_url": "/azure/cdn/monitoring-and-access-log",
       "redirect_document_id": true
     },
-    {
-      "source_path_from_root": "/articles/cdn/enable-raw-logs.md",
-      "redirect_url": "/azure/cdn/monitoring-and-access-log",
-      "redirect_document_id": true
-    },
     {
       "source_path_from_root": "/articles/cdn/cdn-features.md",
       "redirect_url": "/azure/frontdoor/front-door-cdn-comparison",