Make url_fetch tests work on Windows (#44809)

lib/spack/spack/test/url_fetch.py

@@ -173,8 +173,6 @@ def test_fetch(
             assert "echo Building..." in contents
 
 
-# TODO-27021
-@pytest.mark.not_on_windows("Not supported on Windows (yet)")
 @pytest.mark.parametrize(
     "spec,url,digest",
     [
@@ -205,7 +203,6 @@ def test_from_list_url(mock_packages, config, spec, url, digest, _fetch_method):
         assert fetch_strategy.extra_options == {"timeout": 60}
 
 
-@pytest.mark.not_on_windows("Not supported on Windows (yet)")
 @pytest.mark.parametrize("_fetch_method", ["curl", "urllib"])
 @pytest.mark.parametrize(
     "requested_version,tarball,digest",