RFR: 8251861: Remove unused jdk.internal.ref.SoftCleanable and WeakCleanable

[Kiran Sidhartha Ravikumar]

On Tue, 13 Oct 2020 16:39:51 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Hi Guys,
>> 
>> Please review the fix to remove jdk.internal.ref.SoftCleanable and WeakCleanable classes as there is no visible usage
>> of them in JDK. Currently, only PhantomCleanable is used.
>> More information can be viewed at https://mail.openjdk.java.net/pipermail/core-libs-dev/2020-August/067997.html
>> 
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8251861
>> 
>> Thanks,
>> Kiran
>
> Marked as reviewed by rriggs (Reviewer).

Thanks guys

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PR: https://git.openjdk.java.net/jdk/pull/616