Remove Django debug toolbar

The DJDT is tightly coupled with Django templates, which we will not use for the frontend anymore.

aleksis/core/util/core_helpers.py

@@ -41,25 +41,6 @@ def copyright_years(years: Sequence[int], separator: str = ", ", joiner: str = "
     return separator.join(years_strs)
 
 
-def dt_show_toolbar(request: HttpRequest) -> bool:
-    """Add a helper to determine if Django debug toolbar should be displayed.
-
-    Extends the default behaviour by enabling DJDT for superusers independent
-    of source IP.
-    """
-    from debug_toolbar.middleware import show_toolbar  # noqa
-
-    if not settings.DEBUG:
-        return False
-
-    if show_toolbar(request):
-        return True
-    elif hasattr(request, "user") and request.user.is_superuser:
-        return True
-
-    return False
-
-
 def get_app_packages(only_official: bool = False) -> Sequence[str]:
     """Find all registered apps from the setuptools entrypoint."""
     apps = []