Remove now unused _better_reduce.
diff --git a/Lib/copy.py b/Lib/copy.py
index 9b9f5b3..1d7ba56 100644
--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -49,7 +49,7 @@
 """
 
 import types
-from copy_reg import _better_reduce, dispatch_table
+from copy_reg import dispatch_table
 
 class Error(Exception):
     pass