RFR: 8286303: Serial: Remove reference to ParGCRareEvent_lock

[Kim Barrett]

On Fri, 6 May 2022 13:39:22 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   can I have reviews for this removal of an unused reference of ParGCRareEvent_lock in serial gc code - it is the only user of this BOT code, the other collectors have their own, completely separate one as far as I can tell.
> 
> Testing: gha, tier1-5
> 
> Thanks,
> Thomas

Looks good.

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Marked as reviewed by kbarrett (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/8576