Fix tautological conditions (#30735)
As discovered by https://github.com/go-gitea/gitea/pull/30729.
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Co-authored-by: Giteabot <teabot@gitea.io>
(cherry picked from commit 610802df85933e7a190a705bc3f7800da87ce868)
Conflicts:
tests/integration/git_test.go
trivial conflict because of https://codeberg.org/forgejo/forgejo/pulls/2834
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