devel/doxygen: Revert "Fix TinyDeflate's clang-19 compatibility"

This reverts commit 3cf80a2187c4855c9b4af644c39e82db8321b10e,
which depended on 299bcfac7144, and the latter has not yet been merged
onto 2025Q1 (it was authored in June 2024, but only merged after the
2025Q1 branch, which confused me when cherry-picking 3cf80a2).

PR: 283976
Reported by: Dennis Clarke <dclarke@blastwave.org>