Removed memoize from latest_event. Commit ready for merge.

 - Legacy-Id: 15083

Author: rjsparks

ietf/doc/models.py

@@ -607,7 +607,6 @@ def file_tag(self):
     def filename_with_rev(self):
         return u"%s-%s.txt" % (self.name, self.rev)
 
-    @memoize
     def latest_event(self, *args, **filter_args):
         """Get latest event of optional Python type and with filter
         arguments, e.g. d.latest_event(type="xyz") returns an DocEvent