Have mimify raise a DeprecationWarning.  The docs and PEP 4 have listed the
module as deprecated for a while.
diff --git a/Lib/test/test_sundry.py b/Lib/test/test_sundry.py
index 5711fb2..533aedc 100644
--- a/Lib/test/test_sundry.py
+++ b/Lib/test/test_sundry.py
@@ -6,6 +6,7 @@
 with guard_warnings_filter():
     warnings.filterwarnings('ignore', r".*posixfile",
                             DeprecationWarning)
+    warnings.filterwarnings('ignore', r".*mimify", DeprecationWarning)
 
     from test.test_support import verbose