[pre-commit.ci] auto fixes from pre-commit.com hooks

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oauth2_provider/views/base.py

@@ -6,7 +6,7 @@
 from django import http
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.contrib.auth.views import redirect_to_login
-from django.http import HttpResponse, JsonResponse
+from django.http import HttpResponse
 from django.shortcuts import resolve_url
 from django.utils import timezone
 from django.utils.decorators import method_decorator