Drop an outdated env var.

ericsnowcurrently · ericsnowcurrently · commit fc7a72fb1251 · 2021-10-14T14:59:10.000-06:00
diff --git a/Lib/test/test_embed.py b/Lib/test/test_embed.py
@@ -1268,9 +1268,7 @@ def test_init_setpythonhome(self):
             'stdlib_dir': stdlib,
         }
         self.default_program_name(config)
-        env = {'TESTHOME': home,
-               'PYTHONPATH': paths_str,
-               '_PYTHONTESTFROZENMODULES': '1'}
+        env = {'TESTHOME': home, 'PYTHONPATH': paths_str}
         self.check_all_configs("test_init_setpythonhome", config,
                                api=API_COMPAT, env=env)
 
