Remove test for 'new style classes', no longer relevant in a world where all classes are new style.

Author: jaraco

tests/test_main.py

@@ -9,7 +9,6 @@
 from importlib_metadata import (
     Distribution,
     EntryPoint,
-    MetadataPathFinder,
     PackageNotFoundError,
     _unique,
     distributions,
@@ -44,10 +43,6 @@ def test_package_not_found_mentions_metadata(self):
 
         assert "metadata" in str(ctx.exception)
 
-    def test_new_style_classes(self):
-        self.assertIsInstance(Distribution, type)
-        self.assertIsInstance(MetadataPathFinder, type)
-
     @fixtures.parameterize(
         dict(name=None),
         dict(name=''),