usage.c: don't copy/paste the same comment three times
commitc00c7382ddc1e3f2d773b14366023abf53ecce2c
authorÆvar Arnfjörð Bjarmason <avarab@gmail.com>
Tue, 13 Apr 2021 09:08:19 +0000 (13 11:08 +0200)
committerJunio C Hamano <gitster@pobox.com>
Tue, 13 Apr 2021 21:56:28 +0000 (13 14:56 -0700)
treefc6b9f6754b923bc4c47684e7f9a2c4fda990dd5
parent89b43f80a514aee58b662ad606e6352e03eaeee4
usage.c: don't copy/paste the same comment three times

In ee4512ed481 (trace2: create new combined trace facility,
2019-02-22) we started with two copies of this comment,
0ee10fd1296 (usage: add trace2 entry upon warning(), 2020-11-23) added
a third. Let's instead add an earlier comment that applies to all
these mostly-the-same functions.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
usage.c