Remove .json() from user model.

Author: jslvtr

section11/models/user.py

@@ -12,12 +12,6 @@ def __init__(self, username, password):
         self.username = username
         self.password = password
 
-    def json(self):
-        return {
-            'id': self.id,
-            'username': self.username
-        }
-
     def save_to_db(self):
         db.session.add(self)
         db.session.commit()