PEP8 cleanups

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

mayan/apps/task_manager/apps.py

@@ -4,7 +4,7 @@ from django.utils.translation import ugettext_lazy as _
 
 from mayan.apps.common.apps import MayanAppConfig
 from mayan.apps.common.html_widgets import TwoStateWidget
-from mayan.apps.common.menus import menu_object, menu_secondary, menu_tools
+from mayan.apps.common.menus import menu_tools
 from mayan.apps.navigation.classes import SourceColumn
 
 from .classes import CeleryQueue, Task

mayan/apps/task_manager/classes.py

@@ -1,6 +1,5 @@
 from __future__ import absolute_import, unicode_literals
 
-from datetime import timedelta
 from importlib import import_module
 import logging
 
@@ -9,7 +8,6 @@ from kombu import Exchange, Queue
 from django.apps import apps
 from django.utils.encoding import force_text, python_2_unicode_compatible
 from django.utils.module_loading import import_string
-from django.utils.timezone import now
 
 from mayan.celery import app as celery_app
 

mayan/apps/task_manager/dependencies.py

@@ -1,11 +1,6 @@
 from __future__ import absolute_import, unicode_literals
 
-from django.utils.translation import ugettext_lazy as _
-
-from mayan.apps.dependencies.classes import (
-    environment_build, environment_development, environment_testing,
-    PythonDependency
-)
+from mayan.apps.dependencies.classes import PythonDependency
 
 PythonDependency(
     copyright_text='''

mayan/apps/task_manager/icons.py

@@ -3,4 +3,3 @@ from __future__ import absolute_import, unicode_literals
 from mayan.apps.appearance.classes import Icon
 
 icon_task_manager = Icon(driver_name='fontawesome', symbol='braille')
-icon_queue_list = Icon(driver_name='fontawesome', symbol='braille')

mayan/apps/task_manager/links.py

@@ -4,7 +4,7 @@ from django.utils.translation import ugettext_lazy as _
 
 from mayan.apps.navigation.classes import Link
 
-from .icons import icon_task_manager, icon_queue_list
+from .icons import icon_task_manager
 from .permissions import permission_task_view
 
 link_task_manager = Link(

mayan/apps/task_manager/views.py

@@ -1,6 +1,5 @@
 from __future__ import absolute_import, unicode_literals
 
-from django.contrib import messages
 from django.utils.translation import ugettext_lazy as _
 
 from mayan.apps.common.generics import SingleObjectListView