[py27] Remove last traces of py27

django_q/admin.py

@@ -11,7 +11,7 @@ class TaskAdmin(admin.ModelAdmin):
     """model admin for success tasks."""
 
     list_display = (
-        u'name',
+        'name',
         'func',
         'started',
         'stopped',

django_q/core_signing.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import datetime
 import time
 import zlib