please rip out all unneeded parts of busybox's fsck from initrd
Currently, there are multiple parts that look like we have a working
fsck in an initramfs provided by busybox.
As per kaniini the only supported fsck is the one from e2fsprogs.
We still got things like fsck.auto and some busybox-fsck symlinks that also seem to be there even if they don’t work.
Would be great if this stuff could be completely removed.
(from redmine: issue id 8486, created on 2018-02-13)