Revert "Process SNS request triggered by a DVLA S3 update"

app/celery/tasks.py

@@ -1,7 +1,6 @@
 import random
 
 from datetime import (datetime)
-from collections import namedtuple
 
 from flask import current_app
 from notifications_utils.recipients import (
@@ -24,10 +23,7 @@ from app.dao.jobs_dao import (
     all_notifications_are_created_for_job,
     dao_get_all_notifications_for_job,
     dao_update_job_status)
-from app.dao.notifications_dao import (
-    get_notification_by_id,
-    dao_update_notifications_sent_to_dvla
-)
+from app.dao.notifications_dao import get_notification_by_id, dao_update_notifications_sent_to_dvla
 from app.dao.provider_details_dao import get_current_provider
 from app.dao.services_dao import dao_fetch_service_by_id, fetch_todays_total_message_count
 from app.dao.templates_dao import dao_get_template_by_id
@@ -358,27 +354,3 @@ def get_template_class(template_type):
         # since we don't need rendering capabilities (we only need to extract placeholders) both email and letter can
         # use the same base template
         return WithSubjectTemplate
-
-
-@notify_celery.task(bind=True, name='update-letter-notifications-statuses')
-@statsd(namespace="tasks")
-def update_letter_notifications_statuses(self, filename):
-    bucket_location = '{}-ftp'.format(current_app.config['NOTIFY_EMAIL_DOMAIN'])
-    response_file = s3.get_s3_object(bucket_location, filename).decode('utf-8')
-
-    try:
-        NotificationUpdate = namedtuple('NotificationUpdate', ['reference', 'status', 'page_count', 'cost_threshold'])
-        notification_updates = [NotificationUpdate(*line.split('|')) for line in response_file.splitlines()]
-
-    except TypeError:
-        current_app.logger.exception('DVLA response file: {} has an invalid format'.format(filename))
-        raise
-
-    else:
-        if notification_updates:
-            for update in notification_updates:
-                current_app.logger.info('DVLA update: {}'.format(str(update)))
-                # TODO: Update notifications with desired status
-            return notification_updates
-        else:
-            current_app.logger.exception('DVLA response file contained no updates')