Comment 17 for bug 1678187

I think source of the problem here is bug 1501844 and removing a linux-image-extra package causes update-initramfs to be run. If the kernel package maintainer scripts were written differently then removing linux-image and linux-image-extra would not have a problem if /boot was full, but removing linux-image-extra by itself would still be an issue as update-initramfs would be run.