remove some __getslice__

Lib/sre_parse.py

@@ -139,8 +139,6 @@ class SubPattern:
         return self.data[index]
     def __setitem__(self, index, code):
         self.data[index] = code
-    def __getslice__(self, start, stop):
-        return SubPattern(self.pattern, self.data[start:stop])
     def insert(self, index, code):
         self.data.insert(index, code)
     def append(self, code):

Lib/test/test_support.py

@@ -597,11 +597,7 @@ _1M = 1024*1024
 _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