see https://help.libreoffice.org/Common/Setting_up_Printer_and_Fax_Under_UNIX_Based_Platforms it was removed in 4.4 (or so)
-> NEW
That is a very old version of the page, just look at the page history - it was last updated in 2011. The current version is this: https://help.libreoffice.org/Common/Configuring_Printer_and_Fax_Under_UNIX_Based_Platforms - much shorter and no mention of spadmin. git grep still gives a few hits for spadmin though, I guess we can bury those now.
Gabor Kelemen committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/help/commit/?id=add5f832ca414295b09ab8ef05aa73fb0d903705 tdf#105004 Remove some leftover mentions of spadmin
Note that the old help content that is removed from helpcontent2 is not deleted from the wiki unless any admin of that wiki does it manually (hint hint, Dennis).
Hi Adolfo, yes deleting might be a possibility, but what happens to the help when using LibO3.3? This would end in a red link with deleted documentation. I would propose better to add a big notice that the client is very outdated and should be upgraded, plus moreover that the content is for outdated version. What do you think? @ohallot any idea about that?