Silenced a system check we won't always follow.

 - Legacy-Id: 12401

Author: levkowetz

ietf/settings.py

@@ -737,6 +737,10 @@ def skip_unreadable_post(record):
 ACCOUNT_REQUEST_EMAIL = 'account-request@ietf.org'
 
 
+SILENCED_SYSTEM_CHECKS = [
+    "fields.W342",  # Setting unique=True on a ForeignKey has the same effect as using a OneToOneField.
+]
+
 
 # Put the production SECRET_KEY in settings_local.py, and also any other
 # sensitive or site-specific changes.  DO NOT commit settings_local.py to svn.