PHP 7.3 reached end of support in December 2021 and Adobe Commerce 2.3.x reaches end of support in September 2022. You may want to consider planning your upgrade now to Adobe Commerce 2.4.x and PHP 7.4.x to help maintain PCI compliance.
LayeredNavigation
Magento_LayeredNavigation module introduces Layered Navigation UI for Catalog (faceted search). This module can be removed from Magento installation without impact on the application.