removed user.name redundancy

Author: terrancedejesus

rules/integrations/aws/defense_evasion_cloudtrail_logging_deleted.toml

@@ -99,7 +99,6 @@ field_names = [
     "cloud.region",
     "user_agent.original",
     "user.name",
-    "related.user",
     "source.address",
     "aws.cloudtrail.request_parameters",
     "aws.cloudtrail.flattened.request_parameters.name",