When created it was already marked as a 2to3 issue (in the components),
so, for clarity, yes: it's a 2to3 issue (what should the user do with
that when porting... I think that the 2to3 should do something regarding
that... maybe just changing it for a 'pass'?).

Also, the docs say it was removed, but they don't leave clear that it's
not needed because no info is stored anymore (because that was needed
just to clear the frame that was kept alive when an exception was raised
-- so, note that I'm assuming that issue was fixed and it's not needed
anymore, but the docs don't make that clear)