Turn statsd back on, but not for api main app, only for delivery

workers.

app/config.py

@@ -495,9 +495,6 @@ class Live(Config):
 
     CRONITOR_ENABLED = True
 
-    # TODO: revert when we're confident statsd won't break things
-    STATSD_ENABLED = False
-
 
 class CloudFoundryConfig(Config):
     pass

manifest.yml.j2

@@ -3,6 +3,9 @@
     'NOTIFY_APP_NAME': 'api',
     'disk_quota': '2G',
     'sqlalchemy_pool_size': 30,
+    'additional_env_vars': {
+      'STATSD_HOST': None
+    },
     'routes': {
       'preview': ['api.notify.works'],
       'staging': ['api.staging-notify.works'],

tests/app/dao/notification_dao/test_notification_dao.py

@@ -17,7 +17,6 @@ from app.dao.notifications_dao import (
     dao_timeout_notifications,
     dao_update_notification,
     dao_update_notifications_by_reference,
-    delete_notifications_older_than_retention_by_type,
     get_notification_by_id,
     get_notification_for_job,
     get_notification_with_personalisation,