Reverting the Revision: 77368.  I committed Flox's big patch for tests by
mistake. ( It may come in for sure tough)
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index f16da15..e592032 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -1,7 +1,6 @@
 import sys, itertools, unittest
 from test import test_support
 import ast
-import warnings
 
 def to_tuple(t):
     if t is None or isinstance(t, (basestring, int, long, complex)):
@@ -303,11 +302,7 @@
 
 
 def test_main():
-    with warnings.catch_warnings():
-        # Silence Py3k warning
-        warnings.filterwarnings("ignore", "backquote not supported",
-                                SyntaxWarning)
-        test_support.run_unittest(AST_Tests, ASTHelpers_Test)
+    test_support.run_unittest(AST_Tests, ASTHelpers_Test)
 
 def main():
     if __name__ != '__main__':