Hi @Megalight,
Just go to this path packages/Webkul/Shop/src/Config/menu.php and comment your downloadable product array.
And run php artisan config:cache.
Important Note
This will just hide the downloadables. To completely remove you need to remove all the traces like packages/Webkul/Velocity/src/Resources/views/shop/customers/account/downloadable_products, routes files and many more.