Intent to retire python-svg

[Julien Enselme]

Hi all,

I intend to retire python-svg. Tests are failing on Python 3.7 for a
reason I cannot figure, there was no commit during the last year and
according to `repoquery --whatrequires python2-svgwrite` and `repoquery
--whatrequires python3-svgwrite` nothing uses it anymore.

If you want to maintain it, please step up.

Regards,
-- 
Julien Enselme
http://www.jujens.eu/