git: openjdk/loom: fibers: Revert "Initialize ConstantPoolCache::_marking_cycle"

[duke]

Changeset: f31cc985
Author:    mgronlun <markus.gronlund at oracle.com>
Date:      2022-03-23 12:00:26 +0000
URL:       https://git.openjdk.java.net/loom/commit/f31cc985f70fad1cfbcac1f42bab1b2468e538cf

Revert "Initialize ConstantPoolCache::_marking_cycle"

This reverts commit 42ad3454128d8ac360d0960001c22726951fa69a.

It caused also scratch classes to be unloading, reporting getting multiple instances of the same class.

! src/hotspot/share/oops/cpCache.inline.hpp