Optional pytype install on Windows (no CI) (#12669)

tests/typecheck_typeshed.py

@@ -69,8 +69,6 @@ def run_mypy_as_subprocess(directory: str, platform: str, version: str) -> Retur
         "--custom-typeshed-dir",
         ".",
     ]
-    if directory == "tests" and platform == "win32":
-        command.extend(["--exclude", "tests/pytype_test.py"])
     result = subprocess.run(command, capture_output=True, text=True)
     if result.stderr:
         print_error(result.stderr)