Removing delete mass action from product grid

One of our customers asked us to remove the delete option from the mass action element for the product grid. What sounded like a simple task evolved into a lot of debugging and testing. Apparently removing the mass action option from the xml configuration does not work even though a lot of StackOverflow posts say so. The only way that worked for me, was to do it programmatically like this:

Extend the default Product Grid, overwrite the _prepareMassaction() method and remove the delete option there:

<?php

namespace Vendor\Product\Block\Adminhtml\Product;

class Grid extends \Magento\Catalog\Block\Adminhtml\Product\Grid
{
    protected function _prepareMassaction()
    {
        parent::_prepareMassaction();
        $this->getMassactionBlock()->removeItem('delete');
    }
}

After that the DI configuration needs to modified as well, making sure Magento will use our implementation instead of the default one:

<?xml version="1.0"?>
<config xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/
        etc/config.xsd">

    <preference for="Magento\Catalog\Block\Adminhtml\Product\Grid"
        type="Vendor\Product\Block\Adminhtml\Product\Grid"/>
</config>