git: openjdk/jdk: 8325134: Serial: Remove Generation::used_region

[Albert Mingkun Yang]

Changeset: cdf918b1
Author:    Albert Mingkun Yang <ayang at openjdk.org>
Date:      2024-02-05 10:54:41 +0000
URL:       https://git.openjdk.org/jdk/commit/cdf918b1d0838839254f058b69ef5bf363bdc196

8325134: Serial: Remove Generation::used_region

Reviewed-by: tschatzl, iwalulya

! src/hotspot/share/gc/serial/generation.hpp
! src/hotspot/share/gc/serial/tenuredGeneration.hpp
! src/hotspot/share/gc/serial/tenuredGeneration.inline.hpp