bpo-41069: Make TESTFN and the CWD for tests containing non-ascii characters. (GH-21035)

diff --git a/Lib/test/test_msilib.py b/Lib/test/test_msilib.py
index 153a8ac..4a233c3 100644
--- a/Lib/test/test_msilib.py
+++ b/Lib/test/test_msilib.py
@@ -1,13 +1,13 @@
 """ Test suite for the code in msilib """
 import os
 import unittest
-from test.support import TESTFN, FS_NONASCII, import_module, unlink
+from test.support import TESTFN, import_module, unlink
 msilib = import_module('msilib')
 import msilib.schema
 
 
 def init_database():
-    path = TESTFN + (FS_NONASCII or '') + '.msi'
+    path = TESTFN + '.msi'
     db = msilib.init_database(
         path,
         msilib.schema,