Remove initial create notification and follower

Everytime a job is created, a mail.message "Queue Job created" is
created. This is useless, as we already have the creation date and user,
and nobody will ever want to receive a notification for a created job
anyway.

Removing the auto-subscription of the user that created the job makes
sense as well since we automatically subscribe the queue job managers
for failures, and we don't send other notifications.

It allows to remove a lot of insertions of records (and of deletions
when autovacuuming jobs).

Author: Guewen Baconnier

queue_job/models/queue_job.py

@@ -186,7 +186,10 @@ def create(self, vals_list):
             raise exceptions.AccessError(
                 _("Queue jobs must created by calling 'with_delay()'.")
             )
-        return super().create(vals_list)
+        return super(
+            QueueJob,
+            self.with_context(mail_create_nolog=True, mail_create_nosubscribe=True)
+        ).create(vals_list)
 
     def write(self, vals):
         if self.env.context.get("_job_edit_sentinel") is not self.EDIT_SENTINEL: