auth: remove usage of pylons translator

rhodecode/authentication/plugins/auth_rhodecode.py

@@ -24,7 +24,7 b' RhodeCode authentication plugin for buil'
 
 import logging
 
-from pylons.i18n.translation import lazy_ugettext as _
+from rhodecode.translation import _
 
 from rhodecode.authentication.base import RhodeCodeAuthPluginBase, hybrid_property
 from rhodecode.authentication.routes import AuthnPluginResourceBase