- remove all compat items that are pre-2.5 (hooray)

- other cleanup
- don't need compat.decimal, that approach never panned out. hopefully
outside libs aren't pulling it in, they shouldn't be

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/sqlalchemy/orm/mapper.py b/lib/sqlalchemy/orm/mapper.py
index 4e7b4d272..2d7f62153 100644
--- a/lib/sqlalchemy/orm/mapper.py
+++ b/lib/sqlalchemy/orm/mapper.py
@@ -2224,7 +2224,7 @@ def _event_on_resurrect(state):
                                             state, state.dict, col, val)
 
 
-class _ColumnMapping(util.py25_dict):
+class _ColumnMapping(dict):
     """Error reporting helper for mapper._columntoproperty."""
 
     def __init__(self, mapper):