Hide Shipping Method For WooCommerce download Plugin allows you to hide WooCommerce default shipping methods as well as a third-party shipping plugin in your WordPress store.
The plugin automatically hides all other shipping methods when “free shipping” is available during the cart/checkout process. It also includes an option to keep “local pickup” available alongside “free shipping”
Conditional Hide Shipping Method Rules, you can hide shipping method by to hide WooCommerce Shipping methods on your cart and checkout pages.