Magento 2 – How to customize email items?

If you buy a configurable product, then all options are showing in the invoice for example at www.example.com/sales/order/print/order_id/14807/

My team wants me to remove all the configurable options and only show the product name.

I figured out, that the layout is here:

vendormagentomodule-salesviewfrontendlayoutsales_order_print.xml

this is the template:

vendormagentomodule-salesviewfrontendtemplatesorderitems.phtml

it contains this line, which is reponsible for the items being rendered:

<?= $block->getItemHtml($item) ?>

So I analysed the method in the block

vendormagentomodule-salesBlockItemsAbstractItems.php

public function getItemHtml(MagentoFrameworkDataObject $item)
{
    $type = $this->_getItemType($item);

    $block = $this->getItemRenderer($type)->setItem($item);
    $this->_prepareItem($block);
    return $block->toHtml();
}

but I have no clue how I have to modify it