1 files changed, 0 insertions, 4 deletions
diff --git a/dns/zone.py b/dns/zone.py
index b127764..ce88510 100644
--- a/dns/zone.py
+++ b/dns/zone.py
@@ -35,19 +35,15 @@ import dns.grange
 
 class BadZone(dns.exception.DNSException):
     """The DNS zone is malformed."""
-    pass
 
 class NoSOA(BadZone):
     """The DNS zone has no SOA RR at its origin."""
-    pass
 
 class NoNS(BadZone):
     """The DNS zone has no NS RRset at its origin."""
-    pass
 
 class UnknownOrigin(BadZone):
     """The DNS zone's origin is unknown."""
-    pass
 
 class Zone(object):
     """A DNS zone.