as well as SmNode::AdaptToX / AdaptToY's.
It was pointless because the client code in the functions always cast it off.

Change-Id: I00c690bd98a566fb167708216d766a2894de669f
Reviewed-on: https://gerrit.libreoffice.org/20710Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>