Cleanup.

accountant/api/models/operations.py

@@ -135,10 +135,6 @@ class Operation(db.Model):
 
         return query
 
-    @classmethod
-    def get(cls, session, id):
-        return session.query(cls).filter(cls.id == id).one()
-
     @classmethod
     def get_categories_for_range(cls, session, account, begin, end):
         if isinstance(account, int) or isinstance(account, str):