Remove install check again

Author: Daraan

pyproject.toml

@@ -114,5 +114,3 @@ ignore = [
 [tool.ruff.lint.isort]
 extra-standard-library = ["tomllib"]
 known-first-party = ["typing_extensions", "_typed_dict_test_helper"]
-
-

src/test_typing_extensions.py

@@ -6886,13 +6886,7 @@ def test_typing_extensions_compiles_with_opt(self):
         except subprocess.CalledProcessError:
             self.fail('Module does not compile with optimize=2 (-OO flag).')
 
-    def test_typing_extensions_is_not_installed(self):
-        #import importlib
-        #with self.assertRaises(ModuleNotFoundError):
-        #    importlib.import_module("typing_extensions")
-        # Importlib tests fail on GitHub CI
-        # weak alternative to check that no version in site-packages is used
-        self.assertIn("src/typing_extensions.py", typing_extensions.__file__)
+
 
 class CoolEmployee(NamedTuple):
     name: str