Some Fixes for pylint

mfa/recovery.py

@@ -3,12 +3,12 @@ from django.views.decorators.cache import never_cache
 from django.template.context_processors import csrf
 from django.contrib.auth.hashers import make_password, PBKDF2PasswordHasher
 from django.http import HttpResponse
+from django.conf import settings
 from .Common import get_redirect_url
-from .models import *
+from .models import User_Keys
 import simplejson
 import random
 import string
-import datetime
 from django.utils import timezone
 
 USER_FRIENDLY_NAME = "Recovery Codes"