Revert "Prevent prisons access to preprod (#2474)" (#2481)

This reverts commit 5a548ed
which prevented access to:
https://hmpps-book-secure-move-api-preprod.apps.cloud-platform.service.justice.gov.uk/health

helm_deploy/values-preprod.yaml

@@ -11,12 +11,7 @@ generic-service:
       external-dns.alpha.kubernetes.io/set-identifier: hmpps-book-secure-move-api-v1-2-hmpps-book-secure-move-api-preprod-green
     hosts:
       - hmpps-book-secure-move-api-preprod.apps.cloud-platform.service.justice.gov.uk
-
-  allowlist: 
-    groups:
-      - circleci
-      - internal
-
+
   env:
     SENTRY_ENVIRONMENT: "preprod"
     SERVE_API_DOCS: "false"
@@ -68,4 +63,4 @@ cronJobs:
         S3_METRICS_REGION: "eu-west-2"
       namespace_secrets:
         book-a-secure-move-metrics-s3-bucket:
-          S3_METRICS_BUCKET_NAME: bucket_name
+          S3_METRICS_BUCKET_NAME: bucket_name