git: openjdk/jdk-sandbox: shen-late-barriers: Remove nullchecks

[duke]

Changeset: 9fe95e21
Branch: shen-late-barriers
Author:    Cesar Soares <dcsl at amazon.com>
Date:      2025-11-20 06:39:33 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/9fe95e212d48833e4d95afa94db68d64ca30496b

Remove nullchecks

! src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/gc/shenandoah/shenandoah_aarch64.ad
! src/hotspot/share/gc/shared/satbMarkQueue.hpp
! src/hotspot/share/gc/shenandoah/shenandoahRuntime.cpp