Remove unused imports, do PEP8 and DeprecationWarning cleanups

mayan/apps/documents/views.py

@@ -45,7 +45,6 @@ from .permissions import (PERMISSION_DOCUMENT_PROPERTIES_EDIT,
                           PERMISSION_DOCUMENT_VERSION_REVERT, PERMISSION_DOCUMENT_TYPE_EDIT,
                           PERMISSION_DOCUMENT_TYPE_DELETE, PERMISSION_DOCUMENT_TYPE_CREATE,
                           PERMISSION_DOCUMENT_TYPE_VIEW)
-from .runtime import storage_backend
 from .settings import (PREVIEW_SIZE, RECENT_COUNT, ROTATION_STEP,
                        ZOOM_PERCENT_STEP, ZOOM_MAX_LEVEL, ZOOM_MIN_LEVEL)
 from .tasks import (task_clear_image_cache, task_get_document_image,
@@ -100,7 +99,6 @@ def document_properties(request, document_id):
 
     document.add_as_recent_document_for_user(request.user)
 
-
     document_fields = [
         {'label': _(u'Date added'), 'field': lambda x: x.date_added.date()},
         {'label': _(u'Time added'), 'field': lambda x: unicode(x.date_added.time()).split('.')[0]},

mayan/apps/documents/widgets.py

@@ -45,7 +45,6 @@ class DocumentPagesCarouselWidget(forms.widgets.Widget):
 
         # Reuse expensive values
         latest_version_pk = value.latest_version.pk
-        page_count = value.page_count
 
         for page in document_pages:
             output.append(u'<div style="margin: 5px 10px 10px 10px;">')