Idk why they're gone, but somebody had edited the template page.

If they were on the actual articles for each character, they’ve probably been moved. We now have Videos pages for a growing number of characters.

From what I recall, Fandom placed them there out of nowhere a few years back, even though nobody asked them to. They did it to other popular wikis as well. I guess people complained about how unnecessary and obtrusive they were so they were removed.