Hi,
We have a filter you can use to create the code needed to disable the authors: wpseo_enhanced_slack_data.
In addition, you can locate the code we use to build out the estimated reading time via the following pathway: WordPress-SEO/src/presenters/slack/enhanced-data-presenter.php line 65.
You can get a basic idea of what it looks like here: https://github.com/Yoast/wordpress-seo/blob/199e92d48cde46758679222928f35e651f841575/src/presenters/slack/enhanced-data-presenter.php#L59.
Unfortunately, there’s a difference between the support we can offer and the level of programming needed to change (core) features of our plugin. Since we don’t want to take the risk that we break your website by suggesting incorrect or incomplete code, we cannot advise you on how to make such changes. And even though we cannot be of any assistance, you’re completely free to change anything in the plugin to better suit your needs.
We highly recommend checking out?our list of Yoast Partners here https://yoast.com/yoast-partners/ in case you are in need of development.
We will also keep this issue open for 1 week in case someone from the community can help. Perhaps a developer watching these forums can assist further. After which, we will close in order to keep the overview.