Finish view tests

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

mayan/apps/control_codes/classes.py

@@ -6,10 +6,8 @@ from PIL import Image
 from pyzbar.pyzbar import decode
 import qrcode
 
-from django.apps import apps
-from django.db import transaction
 from django.utils.encoding import force_text, python_2_unicode_compatible
-from django.utils.translation import string_concat, ugettext_lazy as _
+from django.utils.translation import string_concat
 
 from mayan.apps.common.serialization import yaml_dump, yaml_load
 from mayan.apps.documents.literals import DOCUMENT_IMAGE_TASK_TIMEOUT