Hide ‘Downloadable’ and ‘Virtual’ checkbox options from Variations?

I am trying hide / unset the ‘Downloadable’ and ‘Virtual’ checkbox options from Woocommerce entirely. I have managed to unset them everywhere EXCEPT in the Woocommerce Variations Panel.

Looking in the Woocommerce plugin files I can see an action hook called ‘woocommerce_variation_options’ which seems to spit out the options for these checkboxes. I can obviously do a “dirty” injection of CSS here but whats the correct method to unset these checkboxes in the variations product panel?

I am looking for something like this:

add_action( 'woocommerce_variation_options', 'my_customize_variation_fields_func', 10, 3 );
function my_customize_variation_fields_func( $loop, $variation_data, $variation ){  
// Remove / Unset "Virtual" checkbox
// Remove / Unset "Downloadable" checkbox
}

I have tried using unset( $variation[ 'virtual' ] ); here but does not work as it has in another filter hook (product_type_options)? Any help / advice appreciated 🙂