Remove infinite redirect in mint.json (#547)

Author: Paul-Cornell

mint.json

@@ -606,10 +606,6 @@
         "source": "/api-reference/ingest/:slug*",
         "destination": "/ingestion/:slug*"
       },
-      {
-        "source": "/api-reference/troubleshooting/api-key-url",
-        "destination": "/api-reference/troubleshooting/api-key-url"
-      },
       {
         "source": "/glossary/glossary",
         "destination": "/welcome"
@@ -669,4 +665,4 @@
           "twitter": "https://twitter.com/UnstructuredIO?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor",
           "linkedin": "https://www.linkedin.com/company/unstructuredio/"
       }
-  }
+  }