Update orm.py
Update orm.py

Reverted changes made to filters.
gerasim13/flask-mongoengine-1,rochacbruno/flask-mongoengine,rochacbruno/flask-mongoengine,quokkaproject/flask-mongoengine,gerasim13/flask-mongoengine-1,quokkaproject/flask-mongoengine,losintikfos/flask-mongoengine,losintikfos/flask-mongoengine