refactoring of data model

models/feedinfo.py

@@ -2,7 +2,6 @@
 #coding: utf-8
 
 from sqlalchemy import Column, Integer, ForeignKey, String, DateTime
-from sqlalchemy.orm import relation, backref
 from datetime import datetime, timedelta
 from random import randint
 
@@ -13,7 +12,6 @@ class Feedinfo(Base):
 
     id = Column(Integer, primary_key=True)
     feed_id = Column(Integer, ForeignKey('feed.id'))
-    feed = relation("Feed", backref=backref('feedinfo', uselist=False))
     title = Column(String(255))
     link = Column(String(255))
     subtitle = Column(String(255))