Remove duplication

Author: stevebux

infrastructure/terraform/components/api/module_lambda_update_letter_queue.tf

@@ -34,10 +34,7 @@ module "update_letter_queue" {
   log_destination_arn       = local.destination_arn
   log_subscription_role_arn = local.acct.log_subscription_role_arn
 
-  lambda_env_vars = merge(local.common_lambda_env_vars, {
-    LETTER_QUEUE_TABLE_NAME = "${local.csi}-letter-queue",
-    LETTER_QUEUE_TTL_HOURS  = 168 # 7 days
-  })
+  lambda_env_vars = merge(local.common_lambda_env_vars, {})
 }
 
 data "aws_iam_policy_document" "update_letter_queue_lambda" {