py2/py3: use urlnorm in Python 3 as well.

product/ERP5Type/Utils.py

@@ -1691,12 +1691,10 @@ class ScalarMaxConflictResolver(persistent.Persistent):
 #  URL Normaliser #
 ###################
 from Products.PythonScripts.standard import url_unquote
-# No new release of urlnorm since 2016 and no py3 support
 urlnorm = None
-if six.PY2:
-  try:
+try:
   import urlnorm
-  except ImportError:
+except ImportError:
   warnings.warn("urlnorm lib is not installed", DeprecationWarning)
 from six.moves.urllib.parse import urlsplit, urlunsplit, urljoin