Will use a different approach for NotebookBar.
Also this should not be in 5.1.

This reverts commit 8c101402.

Change-Id: Ic699723818a890bf4c3be3a2c045527148bd118b
Reviewed-on: https://gerrit.libreoffice.org/20075Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
Tested-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>