Remove dead code from the sanity checker.

Author: Julian

bin/jsonschema_suite

@@ -1,6 +1,4 @@
 #! /usr/bin/env python3
-from __future__ import print_function
-from pprint import pformat
 import argparse
 import errno
 import fnmatch
@@ -13,9 +11,6 @@ import textwrap
 import unittest
 import warnings
 
-if getattr(unittest, "skipIf", None) is None:
-    unittest.skipIf = lambda cond, msg : lambda fn : fn
-
 try:
     import jsonschema.validators
 except ImportError: