Index: pyyaml/trunk/lib/yaml/representer.py
===================================================================
--- pyyaml/trunk/lib/yaml/representer.py	(revision 328)
+++ pyyaml/trunk/lib/yaml/representer.py	(revision 380)
@@ -7,9 +7,4 @@
 
 import datetime
-
-try:
-    set
-except NameError:
-    from sets import Set as set
 
 import sys, copy_reg, types