git: openjdk/jdk: 8254075: Shenandoah: Remove ShenandoahCodeRootsStyle diagnostic flag and related test

[Zhengyu Gu]

Changeset: 51fdb4c0
Author:    Zhengyu Gu <zgu at openjdk.org>
Date:      2020-10-06 15:28:44 +0000
URL:       https://git.openjdk.java.net/jdk/commit/51fdb4c0

8254075: Shenandoah: Remove ShenandoahCodeRootsStyle diagnostic flag and related test

Reviewed-by: shade

! src/hotspot/share/gc/shenandoah/shenandoahCodeRoots.cpp
! src/hotspot/share/gc/shenandoah/shenandoahCodeRoots.hpp
! src/hotspot/share/gc/shenandoah/shenandoahConcurrentRoots.cpp
! src/hotspot/share/gc/shenandoah/shenandoah_globals.hpp
- test/hotspot/jtreg/gc/shenandoah/options/TestCodeCacheRootStyles.java