diff --git a/sqlalchemy_utils/functions/orm.py b/sqlalchemy_utils/functions/orm.py
index e5cecc5..cb8a1bb 100644
--- a/sqlalchemy_utils/functions/orm.py
+++ b/sqlalchemy_utils/functions/orm.py
@@ -390,71 +390,6 @@ def getattrs(obj, attrs):
     return map(partial(getattr, obj), attrs)
 
 
-def local_values(prop, entity):
-    return tuple(getattrs(entity, local_column_names(prop)))
-
-
-def list_local_values(prop, entities):
-    return map(partial(local_values, prop), entities)
-
-
-def remote_values(prop, entity):
-    return tuple(getattrs(entity, remote_column_names(prop)))
-
-
-def local_remote_expr(prop, entity):
-    return sa.and_(
-        *[
-            getattr(remote(prop), r.name)
-            ==
-            getattr(entity, l.name)
-            for l, r in prop.local_remote_pairs
-            if r in remote_column_names(prop)
-        ]
-    )
-
-
-def list_local_remote_exprs(prop, entities):
-    return map(partial(local_remote_expr, prop), entities)
-
-
-def remote(prop):
-    try:
-        return prop.secondary.c
-    except AttributeError:
-        return prop.mapper.class_
-
-
-def local_column_names(prop):
-    if not hasattr(prop, 'secondary'):
-        yield prop._discriminator_col.key
-        for id_col in prop._id_cols:
-            yield id_col.key
-    elif prop.secondary is None:
-        for local, _ in prop.local_remote_pairs:
-            yield local.name
-    else:
-        if prop.secondary is not None:
-            for local, remote in prop.local_remote_pairs:
-                for fk in remote.foreign_keys:
-                    if fk.column.table in prop.parent.tables:
-                        yield local.name
-
-
-def remote_column_names(prop):
-    if not hasattr(prop, 'secondary'):
-        yield '__tablename__'
-        yield 'id'
-    elif prop.secondary is None:
-        for _, remote in prop.local_remote_pairs:
-            yield remote.name
-    else:
-        for _, remote in prop.local_remote_pairs:
-            for fk in remote.foreign_keys:
-                if fk.column.table in prop.parent.tables:
-                    yield remote.name
-
-
 def quote(mixed, ident):
     """
     Conditionally quote an identifier.