zproject: Remove unused imports (F401).

zproject/backends.py

@@ -4,7 +4,6 @@ from typing import Any, Dict, List, Set, Tuple, Optional, Text
 from apiclient.sample_tools import client as googleapiclient
 from django_auth_ldap.backend import LDAPBackend, _LDAPUser
 import django.contrib.auth
-from django.contrib.auth import authenticate
 from django.contrib.auth.backends import RemoteUserBackend
 from django.conf import settings
 from django.http import HttpResponse

zproject/jinja2/__init__.py

@@ -4,9 +4,7 @@ from typing import Any
 from django.contrib.staticfiles.storage import staticfiles_storage
 from django.template.defaultfilters import slugify, pluralize
 from django.core.urlresolvers import reverse
-from django.template.loader import render_to_string
 from django.utils import translation
-from django.http import HttpResponse
 from jinja2 import Environment
 
 from .compressors import minified_js