RFR: 8338763: GenShen: Global GC should not swap remembered sets for the verifier [v2]

[William Kemper]

> It seems that subsequent improvements to remembered set verification have made this change unnecessary.
> 
> ## Testing
> GHA, internal pipelines and local dacapo runs

William Kemper has updated the pull request incrementally with one additional commit since the last revision:

  Do not swap remembered set for global degenerated cycles either

-------------

Changes:
  - all: https://git.openjdk.org/shenandoah/pull/485/files
  - new: https://git.openjdk.org/shenandoah/pull/485/files/d52cdcc6..e5d27d1d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=shenandoah&pr=485&range=01
 - incr: https://webrevs.openjdk.org/?repo=shenandoah&pr=485&range=00-01

  Stats: 4 lines in 1 file changed: 0 ins; 2 del; 2 mod
  Patch: https://git.openjdk.org/shenandoah/pull/485.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah.git pull/485/head:pull/485

PR: https://git.openjdk.org/shenandoah/pull/485