Revert to simpler type guard fix

{{cookiecutter.project_slug}}/{{cookiecutter.project_slug}}/users/views.py

@@ -1,7 +1,6 @@
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.contrib.messages.views import SuccessMessageMixin
 from django.db.models import QuerySet
-from django.http import HttpRequest
 from django.urls import reverse
 from django.utils.translation import gettext_lazy as _
 from django.views.generic import DetailView
@@ -11,11 +10,6 @@ from django.views.generic import UpdateView
 from {{ cookiecutter.project_slug }}.users.models import User
 
 
-class AuthenticatedHttpRequest(HttpRequest):
-    """For mypy to know that the user is authenticated."""
-    user: User
-
-
 class UserDetailView(LoginRequiredMixin, DetailView):
     model = User
     {%- if cookiecutter.username_type == "email" %}
@@ -25,7 +19,6 @@ class UserDetailView(LoginRequiredMixin, DetailView):
     slug_field = "username"
     slug_url_kwarg = "username"
     {%- endif %}
-    request: AuthenticatedHttpRequest
 
 
 user_detail_view = UserDetailView.as_view()
@@ -35,12 +28,13 @@ class UserUpdateView(LoginRequiredMixin, SuccessMessageMixin, UpdateView):
     model = User
     fields = ["name"]
     success_message = _("Information successfully updated")
-    request: AuthenticatedHttpRequest
 
     def get_success_url(self) -> str:
+        assert self.request.user.is_authenticated  # type guard
         return self.request.user.get_absolute_url()
 
     def get_object(self, queryset: QuerySet | None=None) -> User:
+        assert self.request.user.is_authenticated  # type guard
         return self.request.user
 
 
@@ -49,7 +43,6 @@ user_update_view = UserUpdateView.as_view()
 
 class UserRedirectView(LoginRequiredMixin, RedirectView):
     permanent = False
-    request: AuthenticatedHttpRequest
 
     def get_redirect_url(self) -> str:
         {%- if cookiecutter.username_type == "email" %}