git-sh-setup: remove unused "pull with rebase" message

Remove the "pull with rebase" message previously used by the git-pull.sh script, which was removed in 49eb8d39c78 (Remove contrib/examples/*, 2018-03-25). Even if some out-of-tree user copy/pasted the old git-pull.sh code, and relied on passing it a "pull with rebase" argument, we'll fall back on the "*" case here, they just won't get the "pull with rebase" part of their message translated. I don't think it's likely that anyone out-of-tree relied on that, but I'm being conservative here per the discussion that can be found upthread of [1]. 1. https://lore.kernel.org/git/87tuiwjfvi.fsf@evledraar.gmail.com/ Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>