Remove doctest.testmod's deprecated (in 2.4) `isprivate`
argument.  A lot of hair went into supporting that!
diff --git a/Misc/NEWS b/Misc/NEWS
index f5a225f..3c692f2 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -106,6 +106,9 @@
 Library
 -------
 
+- The optional ``is_private`` argument to ``doctest.testmod()``, deprecated
+  in 2.4, was removed.
+
 - Patch #1359618: Speed up charmap encoder by using a trie structure
   for lookup.