GDExtension: Don't deprecate old method of getting script category

core/extension/gdextension_interface.h

@@ -510,7 +510,7 @@ typedef struct {
 	GDExtensionScriptInstanceGet get_func;
 	GDExtensionScriptInstanceGetPropertyList get_property_list_func;
 	GDExtensionScriptInstanceFreePropertyList free_property_list_func;
-	GDExtensionScriptInstanceGetClassCategory get_class_category_func;
+	GDExtensionScriptInstanceGetClassCategory get_class_category_func; // Optional. Set to NULL for the default behavior.
 
 	GDExtensionScriptInstancePropertyCanRevert property_can_revert_func;
 	GDExtensionScriptInstancePropertyGetRevert property_get_revert_func;

core/object/script_language_extension.h

@@ -676,13 +676,11 @@ public:
 					if (native_info->get_class_category_func(instance, &gdext_class_category)) {
 						p_list->push_back(PropertyInfo(gdext_class_category));
 					}
-#ifndef DISABLE_DEPRECATED
 				} else {
 					Ref<Script> script = get_script();
 					if (script.is_valid()) {
 						p_list->push_back(script->get_class_category());
 					}
-#endif // DISABLE_DEPRECATED
 				}
 			}
 #endif // TOOLS_ENABLED