git: openjdk/jdk: 8239927: Product variable PrefetchFieldsAhead is unused and should be removed

[Ningsheng Jian]

Changeset: adbe0661
Author:    Bhavana Kilambi <bhavana.kilambi at arm.com>
Committer: Ningsheng Jian <njian at openjdk.org>
Date:      2022-02-14 01:33:20 +0000
URL:       https://git.openjdk.java.net/jdk/commit/adbe0661029f12a36a44af52b83b189384d33a27

8239927: Product variable PrefetchFieldsAhead is unused and should be removed

Reviewed-by: njian, dholmes

! src/hotspot/cpu/x86/vm_version_x86.cpp
! src/hotspot/share/gc/shared/gc_globals.hpp
! src/hotspot/share/runtime/arguments.cpp