remove cross-version compatibility code
diff --git a/Lib/test/test_argparse.py b/Lib/test/test_argparse.py
index e1bc83a..7ce2b47 100644
--- a/Lib/test/test_argparse.py
+++ b/Lib/test/test_argparse.py
@@ -22,30 +22,10 @@
import warnings
import argparse
+from StringIO import StringIO
+
from test import test_support
-try:
- from StringIO import StringIO
-except ImportError:
- from io import StringIO
-
-try:
- set
-except NameError:
- from sets import Set as set
-
-try:
- sorted
-except NameError:
-
- def sorted(iterable, reverse=False):
- result = list(iterable)
- result.sort()
- if reverse:
- result.reverse()
- return result
-
-
class TestCase(unittest.TestCase):
def assertEqual(self, obj1, obj2):