"rcceph" is a SysVinit-style command-line interface for stopping, starting,
enabling, etc. all ceph-osd and ceph-mon systemd units on a machine, in one go.
Since the same functionality is provided by ceph-{osd,mon}.target, the script
is obsolete. It is also unmaintained. Judging from the absence of recent
mentions of the script online, I guess it is no longer used.
Leaving dead code in the tree can cause confusion, especially when the code is
packaged and shipped to customers. Therefore I propose to rip it out.