git: openjdk/loom: fibers: No longer need getThreadVThread() and getVThreadThread().

[duke]

Changeset: 11b7d833
Author:    Chris Plummer <chris.plummer at oracle.com>
Date:      2021-02-19 00:50:04 +0000
URL:       https://git.openjdk.java.net/loom/commit/11b7d833

No longer need getThreadVThread() and getVThreadThread().

! src/jdk.jdwp.agent/share/native/libjdwp/util.c
! src/jdk.jdwp.agent/share/native/libjdwp/util.h