Remove the simple slicing API. All slicing is now done with slice objects.
diff --git a/Lib/test/test_support.py b/Lib/test/test_support.py
index 637043d..5b2176e 100644
--- a/Lib/test/test_support.py
+++ b/Lib/test/test_support.py
@@ -423,11 +423,7 @@
 _1G = 1024 * _1M
 _2G = 2 * _1G
 
-# Hack to get at the maximum value an internal index can take.
-class _Dummy:
-    def __getslice__(self, i, j):
-        return j
-MAX_Py_ssize_t = _Dummy()[:]
+MAX_Py_ssize_t = sys.maxsize
 
 def set_memlimit(limit):
     import re