RFR: 8351700: Remove code conditional on BarrierSetNMethod being null [v3]

[Aleksey Shipilev]

On Wed, 12 Mar 2025 09:43:21 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Doug Simon has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   removed unused code
>
> Looks fine, thanks.

> `gc/TestAllocHumongousFragment.java#generational` is failing on Windows: https://github.com/dougxc/jdk/actions/runs/13807682996/job/38625487569#step:9:630 I don't think it can be caused by this PR. Are you able to confirm that @shipilev ?

It was problemlisted by #23982 yesterday. You can ignore it, or merge with recent master to get clean GHA runs.

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PR Comment: https://git.openjdk.org/jdk/pull/23996#issuecomment-2717727270