Remove unsubscribe instructions

apps/amo/utils.py

@@ -197,7 +197,6 @@ def send_mail(subject, message, from_email=None, recipient_list=None,
                                               headers=headers or {},
                                               ).send(fail_silently=False)
             else:
-                log.info('Email w/o perm setting: %s' % subject)
                 result = EmailMessage(subject, message, from_email,
                                       white_list,
                                       connection=connection,

apps/stats/templates/stats/contribution-thankyou-email.ltxt

@@ -3,5 +3,3 @@
 
 {% blocktrans %}Learn more about the future of {{ addon_name }} by clicking here:{% endblocktrans %}
 {{ learn_url }}
-
-{% blocktrans %}Please email amo-unsubscribe@mozilla.com if you would like to stop receiving future messages from {{ domain }} users.{% endblocktrans %}