WooCommerce by default comes with a lot of widgets installed. A lot of times these aren’t used anywhere as themes have their own code to display products. They can add backend load and front-end load if you have them in sidebars or footers.
You can easily disable WooCommerce widgets globally with a single click. This applies to both the backend and front-end. To disable the WooCommerce widgets simply select “Disable Widgets” under the WooCommerce section.