RFR: 8260193: Remove JVM_GetInterfaceVersion() and JVM_DTraceXXX [v2]

[Ioi Lam]

On Tue, 2 Feb 2021 16:00:43 GMT, Gerard Ziemski <gziemski at openjdk.org> wrote:

>> I am not sure if jni_utils.c is the right file (it defines the `JNU_XXX` functions that are used by other shared libraries).
>> 
>> There are other .c files that have trivial `DEF_JNI_OnLoad` functions (e.g., java.base/share/native/libnio/nio_util.c).
>> 
>> @AlanBateman do you have any suggestions?
>
> I'm fine with the way it is, just thought we might want to consider cleaning up a bit more, since it's a cleanup task itself.

Thanks Gerard. The main purpose of this PR is to clean up the JVM side. I'll leave the refactoring of check_version.c to the core-lib team.

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PR: https://git.openjdk.java.net/jdk/pull/2338