Trivial change to not print an error from a library (was blocking use in...

Trivial change to not print an error from a library (was blocking use in CGIs). Suggested by donovan.

indra/lib/python/indra/base/lluuid.py

@@ -276,7 +276,8 @@ def uuid_bits_to_uuid(bits):
     from mulib import stacked
     stacked.NoProducer()  # just to exercise stacked
 except:
-    print "Couldn't import mulib.stacked, not registering UUID converter"
+    #print "Couldn't import mulib.stacked, not registering UUID converter"
+    pass
 else:
     def convertUUID(uuid, req):
         req.write(str(uuid))