git: openjdk/loom: fibers: Get rid of fixme comment for supportsVirtualThreads removal. JDK-8282439 has been filed for this task.

[duke]

Changeset: c137c56c
Author:    Chris Plummer <chris.plummer at oracle.com>
Date:      2022-02-28 07:46:21 +0000
URL:       https://git.openjdk.java.net/loom/commit/c137c56c88cd26de2067b662552c9d0f2ab77e8e

Get rid of fixme comment for supportsVirtualThreads removal. JDK-8282439 has been filed for this task.

! src/jdk.jdwp.agent/share/native/libjdwp/VirtualMachineImpl.c