Removes unused imports

Removed unused imports founded by:

find . -type f -name "*py" -exec pylint -r n {} \; | grep -E "Unused imp|^\*"

Change-Id: I84f81ed833f6f792c5beb41a4d6b26cbb3236b2b

.mailmap

@@ -7,3 +7,4 @@
 <yorik.sar@gmail.com> <yorik@ytaraday>
 <jeblair@hp.com> <james.blair@rackspace.com>
 <ke.wu@ibeca.me> <ke.wu@nebula.com>
+Zhongyue Luo <zhongyue.nah@intel.com> <lzyeval@gmail.com>

horizon/middleware.py

@@ -30,7 +30,6 @@ from django.conf import settings
 from django.contrib import messages as django_messages
 from django.contrib.auth import REDIRECT_FIELD_NAME
 from django.contrib.auth.views import redirect_to_login
-from django.core.urlresolvers import reverse
 from django.utils import timezone
 from django.utils.encoding import iri_to_uri
 

horizon/tables/actions.py

@@ -21,7 +21,7 @@ from django import shortcuts
 from django.conf import settings
 from django.core import urlresolvers
 from django.utils.functional import Promise
-from django.utils.translation import string_concat, ugettext_lazy as _
+from django.utils.translation import ugettext_lazy as _
 
 from horizon import exceptions
 from horizon import messages

horizon/utils/secret_key.py

@@ -20,7 +20,6 @@ from __future__ import with_statement  # Python 2.5 compliance
 import lockfile
 import random
 import string
-import tempfile
 import os
 
 

openstack_dashboard/dashboards/admin/flavors/extras/tables.py

@@ -15,7 +15,6 @@
 #    under the License.
 
 import logging
-import re
 
 from django.core.urlresolvers import reverse
 from django.utils.translation import ugettext_lazy as _

openstack_dashboard/dashboards/admin/flavors/tests.py

@@ -1,5 +1,3 @@
-import uuid
-
 from django import http
 from django.core.urlresolvers import reverse
 from mox import IsA

openstack_dashboard/test/error_pages_urls.py

@@ -1,4 +1,4 @@
-from django.conf.urls import patterns, url, include
+from django.conf.urls import patterns
 
 from openstack_dashboard.urls import urlpatterns
 

openstack_dashboard/test/tests/error_pages.py

@@ -19,7 +19,6 @@ from os import path
 
 from django.conf import settings
 
-from horizon import exceptions
 from openstack_dashboard.test import helpers as test