There is no uninstall file in the folder! I could not find any way to uninstall Easyphp Devserver 16.1. I have to uninstall it, and then install again another version of the same software.
There is no special entries anywhere in system. Simply delete EasyPHP 16.1 directory from Program Files *C:\Program Files (x86)\EasyPHP-Devserver-16.1*, and delete shortcode from desktop. That's all.
Don't forget to backup or move databases that you might have created first!