Remove outdated commented-out code

The relevant Fedora Rawhide bit was removed recently in ec0bb16ee59577a47b8962611c1e7ae2bf43ca58,
but the EPEL 9 package does not require pyproject-rpm-macros >= 1.6.3,
because it uses %pyproject_buildrequires -w.

python-virtualenv.spec

@@ -109,12 +109,6 @@ echo '__version__, __version_tuple__ = version, version_tuple' >> %{buildroot}%{
 
 %if %{with tests}
 %check
-# Existing dist-info folder confuses
-# importlib.metadata entry points and
-# that leads to failed tests where
-# virtualenv is run via subprocess.
-# rm -rv *.dist-info -- EPEL 9: this file is not here with %%pyproject_buildrequires -w
-
 # Skip tests which requires internet or some extra dependencies
 # Requires internet:
 # - test_download_*