Fix and simplify isort config

.isort.cfg

@@ -7,4 +7,5 @@ include_trailing_comma=True
 force_grid_wrap=0
 use_parentheses=True
 line_length=88
-known_third_party=dateutil,factory,faker,hypothesis,pytest,slugify,webtest,zope
+default_section=THIRDPARTY
+known_first_party=bouncer,tests

tests/bouncer/search_test.py

@@ -1,7 +1,7 @@
 from elasticsearch import Elasticsearch
+from mock import ANY, MagicMock, patch
 
 from bouncer.search import get_client, includeme
-from mock import ANY, MagicMock, patch
 
 
 class TestGetClient(object):

tests/bouncer/views_test.py

@@ -1,10 +1,10 @@
 import json
 
+import mock
 import pytest
 from elasticsearch import exceptions as es_exceptions
 from pyramid import httpexceptions, testing
 
-import mock
 from bouncer import util, views
 
 

tox.ini

@@ -32,7 +32,7 @@ deps =
     {tests,docstrings,checkdocstrings}: mock
     lint: flake8
     {format,checkformatting}: black
-    {format,checkformatting}: isort[requirements]
+    {format,checkformatting}: isort
     coverage: coverage
     codecov: codecov
     docstrings: sphinx-autobuild