[code cleaning] Remove the now useless yes_marker

views.py

@@ -87,11 +87,6 @@ class ExternalAuthError(Controller):
             % (form.get('error_code'), form.get('error_message', ''))))
 
 
-class yes_marker(object):
-    def __bool__(self):
-        return True
-
-
 class ExternalAuthRetrieverStart(authentication.WebAuthInfoRetriever):
     """External authentication first step.