RFR: 8253275: Remove unused methods after CMS removal [v2]

[Aleksey Shipilev]

On Thu, 17 Sep 2020 08:32:12 GMT, Per Lidén <pliden at openjdk.org> wrote:

>> Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Remove Generation::sample_eden_chunk() too and rewire some code
>
> Thanks for cleaning!

> Please also remove Generation::sample_eden_chunk(). There is apparently
> no one overriding this empty method.

Right. Did so! Running some tests to make sure my rewire did not break stuff.

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PR: https://git.openjdk.java.net/jdk/pull/219