Remove visual noise from o3tl

Change-Id: I15bd49dfa24b5eb260d442f15947788b41d000d1
Reviewed-on: https://gerrit.libreoffice.org/8284
Reviewed-by: Thorsten Behrens <thb@documentfoundation.org>
Tested-by: Thorsten Behrens <thb@documentfoundation.org>