ruf cleanup imports, bigly.

core/views/expo.py

@@ -4,14 +4,11 @@ from pathlib import Path
 from sys import getfilesystemencoding as sys_getfilesystemencoding
 from urllib.parse import unquote as urlunquote
 from urllib.parse import urljoin
-from urllib.request import urlopen
 
 import django.forms as forms
-from django.contrib import admin
-from django.http import Http404, HttpResponse, HttpResponseRedirect
+from django.http import HttpResponse, HttpResponseRedirect
 from django.shortcuts import redirect, render
-from django.template import Context, loader
-from django.urls import resolve, reverse
+from django.urls import reverse
 from django.views.decorators.csrf import ensure_csrf_cookie
 
 import troggle.core.views.caves