bpo-38371: Remove remaining use of tk.split from bigmem tcl test (GH-29082)

Author: zware

Lib/test/test_tcl.py

@@ -729,7 +729,6 @@ def test_huge_string_builtins(self, size):
         self.assertRaises(OverflowError, tk.exprlong, value)
         self.assertRaises(OverflowError, tk.exprboolean, value)
         self.assertRaises(OverflowError, tk.splitlist, value)
-        self.assertRaises(OverflowError, tk.split, value)
         self.assertRaises(OverflowError, tk.createcommand, value, max)
         self.assertRaises(OverflowError, tk.deletecommand, value)