avoid one commit

oml/item/models.py

@@ -350,6 +350,8 @@ class Item(db.Model):
         for key in self.meta_keys:
             if key not in self.meta and key in self.info:
                 self.meta[key] = self.info[key]
+            del self.info[key]
+
         #FIXME get from user_meta
         if state.online:
             if 'isbn' in self.meta:
@@ -418,7 +420,6 @@ class Item(db.Model):
             self.users.remove(user)
         for l in self.lists.filter_by(user_id=user.id):
             l.items.remove(self)
-        state.db.session.commit()
         if not self.users:
             self.delete()
         else: