UPDATE

drf_spectacular/views.py

@@ -0,0 +1,19 @@
+from django.http import HttpResponseNotFound
+from django.views import View
+
+
+class _DisabledSchemaView(View):
+    def dispatch(self, request, *args, **kwargs):
+        return HttpResponseNotFound("Schema endpoint is disabled.")
+
+
+class SpectacularAPIView(_DisabledSchemaView):
+    pass
+
+
+class SpectacularSwaggerView(_DisabledSchemaView):
+    pass
+
+
+class SpectacularRedocView(_DisabledSchemaView):
+    pass