fixup! fix: more cleanup

Author: henryiii

tests/test_multiple_inheritance.cpp

@@ -192,14 +192,6 @@ TEST_SUBMODULE(multiple_inheritance, m) {
         .def_static("static_func", &VanillaStaticMix2::static_func)
         .def_readwrite_static("static_value", &VanillaStaticMix2::static_value);
 
-
-    struct WithDict { };
-    struct VanillaDictMix1 : Vanilla, WithDict { };
-    struct VanillaDictMix2 : WithDict, Vanilla { };
-    py::class_<WithDict>(m, "WithDict", py::dynamic_attr()).def(py::init<>());
-    py::class_<VanillaDictMix1, Vanilla, WithDict>(m, "VanillaDictMix1").def(py::init<>());
-    py::class_<VanillaDictMix2, WithDict, Vanilla>(m, "VanillaDictMix2").def(py::init<>());
-
     // test_diamond_inheritance
     // Issue #959: segfault when constructing diamond inheritance instance
     // All of these have int members so that there will be various unequal pointers involved.