Remove redundant imports.
diff --git a/Lib/pickle.py b/Lib/pickle.py
index f6ff380..a911ca0 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -1326,7 +1326,7 @@
     return doctest.testmod()
 
 if __name__ == "__main__":
-    import sys, argparse
+    import argparse
     parser = argparse.ArgumentParser(
         description='display contents of the pickle files')
     parser.add_argument(