I've removed Add to Cart button from Shop and Category pages, but how about Related Products section that is below a product page? The code below doesn't work for that.

```
function remove_add_to_cart_buttons() {
  if( is_product_category() || is_shop()) { 
    remove_action( 'woocommerce_after_shop_loop_item', 'woocommerce_template_loop_add_to_cart' );
  }
}
add_action( 'woocommerce_after_shop_loop_item', 'remove_add_to_cart_buttons', 10 );

```