RFR: 8276687: Remove support for JDK 1.4.1 PerfData shared memory files [v2]

[Kevin Walls]

On Thu, 13 Oct 2022 19:44:37 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> We have code in jdk.internal.jvmstat for supporting an ancient version (JDK 1.4.1). There's currently no test case for this code, so it's likely to be further bit-rotten in the future. Let's remove it now.
>> 
>> If anyone wants to connect to JDK 1.4.1, they can use tools from JDK 19 or earlier.
>
> Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:
> 
>   made exception message in PerfDataFile.getLocalVmId() more meaningful

Yes, that's good.  OK so there is evidence that v1_0 perfdata was at least used for some 1.4.2, so yes no rush to remove the v1_0 classes, thanks.

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PR: https://git.openjdk.org/jdk/pull/10687