PEP8 cleanups

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

mayan/apps/document_parsing/apps.py

@@ -16,7 +16,6 @@ from mayan.apps.common.menus import (
 )
 from mayan.apps.documents.search import document_search, document_page_search
 from mayan.apps.documents.signals import post_version_upload
-from mayan.apps.documents.widgets import document_link
 from mayan.apps.navigation import SourceColumn
 from mayan.celery import app