remove duplicate custom check - Audit Message Ingestion

Author: soujay

src/ServiceControl/Notifications/Email/CustomChecksMailNotification.cs

@@ -25,7 +25,6 @@ class CustomChecksMailNotification : IDomainHandler<CustomCheckFailed>, IDomainH
             "ServiceControl database",
             "ServiceControl Remotes",
             "Error Message Ingestion Process",
-            "Audit Message Ingestion",
             "Error Message Ingestion"
         };