Revert unused/incorrect imports

babybuddy/models.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 import pytz
-import json
-import io
 
 from django.conf import settings
 from django.contrib.auth.models import User
@@ -14,8 +12,6 @@ from django.utils.translation import gettext_lazy as _
 
 from rest_framework.authtoken.models import Token
 
-import qrcode
-
 
 class Settings(models.Model):
     user = models.OneToOneField(User, on_delete=models.CASCADE)