I'm curious about the reason.
There have been several variations of a famous study where they sent identical resumes to hundreds of companies, with the single change that there was a stereotypical "white" name vs "Black" name at the top.
The studies consistently find that the "white" names get far more call backs.
Granted, those studies were in the US, but I'd be very surprised if a similar effect did not show up in most European countries.
Photos are completely unnecessary and mostly nuisance IMO.