PEP8 fixes

Author: Guillim

app/authentification/tests/test_signup.py

@@ -1,8 +1,4 @@
 from django.test import TestCase
-from django.utils.encoding import force_bytes
-from django.utils.http import urlsafe_base64_encode
-
-from ..tokens import account_activation_token
 from ..forms import SignupForm