Jarek 🚲
It looks largely removed, all I see leftover is the name on the highway=construction https://www.openstreetmap.org/way/24603835, one bus stop https://www.openstreetmap.org/node/1358306676 and if you want to be picky, the building https://www.openstreetmap.org/way/61240215 named "Union Station GO Bus Terminal (Closed)" which may have since been demolished? Would have to survey.

GO bus relations are mostly PTv1 and fantastically out of date anyway so we're not really missing much by having them not updated just yet. But feel free to update!