PEP8 Cleanups

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/common/classes.py

@@ -4,7 +4,6 @@ import hashlib
 
 from django.apps import apps
 from django.db import models
-from django.template import loader
 from django.template.response import TemplateResponse
 from django.urls import reverse
 from django.utils.encoding import force_text, python_2_unicode_compatible