test_lesson_check.py: skip unnecessary steps

Author: maxim-belkin

bin/test_lesson_check.py

@@ -10,10 +10,8 @@ def setUp(self):
 
     def test_file_list_has_expected_entries(self):
         # For first pass, simply assume that all required files are present
-        all_filenames = [filename.replace('%', '')
-                         for filename in lesson_check.REQUIRED_FILES]
 
-        lesson_check.check_fileset('', self.reporter, all_filenames)
+        lesson_check.check_fileset('', self.reporter, lesson_check.REQUIRED_FILES)
         self.assertEqual(len(self.reporter.messages), 0)