RFR: 8300977: Retire java.io.ExpiringCache [v2]

[Jaikiran Pai]

On Tue, 28 Mar 2023 06:55:26 GMT, Per Minborg <pminborg at openjdk.org> wrote:

>> This PR proposed to retire the class 'java.io.ExpiringCache'. The use of the class has been off by default since Java 16 but could be explicitly turned on by means of two System properties.
>
> Per Minborg has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Revert change after comments

Hello Per, the changes look good to me.

I was a bit surprised that the PR didn't have any removal/changes of existing test cases, but looking in the repo I don't see any test using any of these system properties. So it appears that this code was never exercised in recent times.

Please wait for another review from someone with more experience in this area before integrating.

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Marked as reviewed by jpai (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/12167#pullrequestreview-1360396191