git: openjdk/leyden: premain: make/data/hotspot-symbols/symbols-unix is no longer needed (removed in mainline)

[duke]

Changeset: b8b686a2
Author:    iklam <ilam3388 at gmail.com>
Date:      2024-05-19 22:36:16 +0000
URL:       https://git.openjdk.org/leyden/commit/b8b686a2321dedc066b4c385a6bb30940e5e521a

make/data/hotspot-symbols/symbols-unix is no longer needed (removed in mainline)

- make/data/hotspot-symbols/symbols-unix