Deprecate DTrace support

[Laurence Cable]

On 1/18/22 10:24 AM, Vladimir Kozlov wrote:
> Hi
>
> The question about dropping DTrace support in HotSpot VM rose during 
> discussion 8278423: "ExtendedDTraceProbes should be deprecated" [1].
>
> It is not clear for me about Oracle support for it after we dropped 
> SPARC. Do we still need to support it or we can drop it (remove code 
> from HotSpot)?
>
> Thanks,
> Vladimir K
>
> [1] https://bugs.openjdk.java.net/browse/JDK-8278423