[1.9.x] Removed an unused import.

tests/test_client_regress/views.py

@@ -5,7 +5,6 @@ from django.contrib.auth.decorators import login_required
 from django.core.serializers.json import DjangoJSONEncoder
 from django.http import HttpResponse, HttpResponseRedirect, JsonResponse
 from django.shortcuts import render
-from django.template import RequestContext
 from django.template.loader import render_to_string
 from django.test import Client
 from django.test.client import CONTENT_TYPE_RE