For example, you can find a LOT of copyrighted font files that were committed somewhere in GitHub, and then removed in a later commit once they realized they'd accidentally uploaded a copyrighted file.
But they're still always there in the history, effortless to download.
I'm not really sure what to make of that. I don't think it would really count as removal in court... but it seems rare and complex enough that it's not worth bringing up?