git: openjdk/leyden: premain: Remove reference to non-existing field ShenandoahRuntime::write_ref_field_pre

[duke]

Changeset: 442db292
Branch: premain
Author:    Ashutosh Mehra <asmehra at redhat.com>
Date:      2025-08-29 11:28:20 +0000
URL:       https://git.openjdk.org/leyden/commit/442db2929356a1780ffa69e3b4a1ce336c0b2f97

Remove reference to non-existing field ShenandoahRuntime::write_ref_field_pre

Signed-off-by: Ashutosh Mehra <asmehra at redhat.com>

! src/hotspot/share/code/aotCodeCache.cpp