Remove internal notification caller tokens

infra/local/vault/bff.hcl

@@ -19,10 +19,6 @@ env_template "SXCHNGE_JWT_SECRET" {
   error_on_missing_key = true
 }
 
-env_template "SXCHNGE_NOTIFICATIONS_TOKEN" {
-  contents = "{{ with secret \"kv/data/services/notifications/callers/bff\" }}{{ .Data.data.token }}{{ end }}"
-  error_on_missing_key = true
-}
 
 exec {
   command = ["/usr/local/bin/start-service"]