removed need for X-Confirm-Delete header, which was abandoned by mozi…

…lla in bug #731466

see
https://bugzilla.mozilla.org/show_bug.cgi?id=731466
http://docs.services.mozilla.com/storage/apis-2.0.html

weave/views/sync.py

@@ -160,7 +160,6 @@ def storage(request, version, username, timestamp, col_name=None, wboid=None):
     elif request.method == 'DELETE':
         # FIXME: This is am mess, it needs better structure
         if col_name is None and wboid is None:
-            assert request.META.has_key('X-Confirm-Delete'), "To remove all records for your user, please make sure to include a X-Confirm-Delete HTTP header in your DELTE request!"
             Collection.on_site.filter(user=request.user).delete()
             return weave_timestamp(timestamp)