Remove font dialog screenshot.
* The screenshot command "make screenshot" does not produce
a valid and usefull screenshot of the Font dialog.
* Manual addition of any localized screenshot is not practical at the
current state of the screeshooting development (~40 languages)
* For the moment, removal of the bad screenshot is advised until the
screenshooting get fixed or improved for this kind of dialog.
Change-Id: Idcb0ffb7cc6f222a84bf09f3ef91ca379c05adc2
Reviewed-on: https://gerrit.libreoffice.org/c/help/+/141809
Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>