diff -r 317333e0793c -r 3ea8d6b5e665 contrib/check-code.py
--- a/contrib/check-code.py	Sun May 17 17:40:26 2015 -0700
+++ b/contrib/check-code.py	Sun May 17 17:45:47 2015 -0700
@@ -245,7 +245,6 @@
 #    (r'^\s*print\s+', "avoid using print in core and extensions"),
     (r'[\x80-\xff]', "non-ASCII character literal"),
     (r'("\')\.format\(', "str.format() not available in Python 2.4"),
-    (r'\.isdisjoint\(', "set.isdisjoint not available in Python 2.4"),
     (r'(?<!def)\s+(any|all|format)\(',
      "any/all/format not available in Python 2.4", 'no-py24'),
     (r'if\s.*\selse', "if ... else form not available in Python 2.4"),