Remove traces of MacOS9 support.

Fix for issue #7908
diff --git a/Lib/test/test_reprlib.py b/Lib/test/test_reprlib.py
index 627482c..0e799f6 100644
--- a/Lib/test/test_reprlib.py
+++ b/Lib/test/test_reprlib.py
@@ -304,8 +304,7 @@
 
 def test_main():
     run_unittest(ReprTests)
-    if os.name != 'mac':
-        run_unittest(LongReprTest)
+    run_unittest(LongReprTest)
 
 
 if __name__ == "__main__":