If you’re not satisfied with the new WooCommerce Analytics and WooCommerce Admin, you can always start using the original reports which are available under WooCommerce -> Reports.
How to disable WooCommerce Admin Dashboard and WooCommerce Analytics
If you want to disable completely WooCommerce Analytics and WooCommerce Admin, this is done by using the woocommerce_admin_disabled filter. Not that the code below won’t work if you put it in your theme’s functions.php file. You have to create a plugin and activate it through Plugins -> Installed Plugins.
So, go in /wp-contents/plugins/ and there create disable-woocommerce-admin.php. Inside that file put the following code:
* Plugin Name: Disable WooCommerce Admin
* Description: This plugin disables the new WooCommerce Admin package in WooCommerce.
* Version: 1.0
add_filter( 'woocommerce_admin_disabled', '__return_true' );
After you activate the plugin you’ll notice that WooCommerce -> Dashboard and the whole menu item Analytics will not be available.
The original plugin file to disable the new WooCommerce Admin package in WooCommerce can be downloaded here.