Resolves: fdo#75408 go back to the old way of doing things

Revert "Resolves: rhbz#1012353 fdo#48846 allow starmath objects to be resized"

This reverts commit 1b717e5686f34c3ce798310a6216f7ea98fb2cd9.

Change-Id: Iaf8410fc1e5611cda04356d32e37ee25a7f59898
(cherry picked from commit 51221bbf0c7cca0a329393dac2059818006ab338)
(cherry picked from commit 2babe1baf46dcad936703d12cbd847393f5e467b)
Reviewed-on: https://gerrit.libreoffice.org/13136
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>