Jeff King authored Aug 31, 2023 and Junio C Hamano committed Aug 31, 2023

Since the previous commit dropped the hard-coded limit in
traverse_trees(), we don't need this macro there anymore (the code can
handle any number of trees in parallel).

We do define MAX_UNPACK_TREES using MAX_TRAVERSE_TREES, due to
5290d451

 (tree-walk.c: break circular dependency with unpack-trees,
2020-02-01). So we can just directly define that as "8" now; we know
traverse_trees() can handle whatever we throw at it.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>