I unmounted and removed the entry line in /etc/fstab regarding my /boot partition. The hero of all Unix questions Gilles here actually mentions this:
"No, /boot isn't needed during normal system operation. In fact, it doesn't need to be mounted at all, since only the bootloader reads /boot, not Linux itself. You can add noauto to the /boot line in your /etc/fstab"
I rebooted the OS - VM Fedora 22, and everything is working. I do not care about the updates and how that might mess it, my simple question is:
How does the GRUB knows from where to take its settings, knowing that I have removed /boot ?