remove useless code

bda/views.py

@@ -12,10 +12,6 @@ import hashlib
 from django.core.mail import send_mail                                        
 from django.utils import timezone
 from django.views.generic.list import ListView
-from django.http import HttpResponseRedirect
-from django.core.urlresolvers import reverse
-from django.contrib import messages
-from django.views.decorators.http import require_POST
 
 from datetime import timedelta
 import time