Why this favicon keeps showing?

Anytime I create a new Laravel project and launch it locally in the browser with the php artisan serve command, a favicon shows up, but I didnt add any. It keeps showing even when I delete public/favicon.ico - but that's an empty file anyway. The favicon that shows up is the one I have used before for another Laravel project.

Any idea why this keeps on showing? It's not a big deal, but annoys me a bit.

Cheers,

Jan