RFR: 8260193: Remove JVM_GetInterfaceVersion() and JVM_DTraceXXX

[Ioi Lam]

- JVM_GetInterfaceVersion() was used by "HotSpot Express" (HSX) which allowed the same JDK library to use different version of HotSpot. However, HSX is no longer supported so this API should be removed.
- Implementations of APIs such as JVM_DTraceActivate, were removed in [JDK-8068976](https://bugs.openjdk.java.net/browse/JDK-8068976), so their declarations should be removed from jvm.h

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Commit messages:
 - 8260193: Remove JVM_GetInterfaceVersion() and JVM_DTraceXXX

Changes: https://git.openjdk.java.net/jdk/pull/2338/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2338&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8260193
  Stats: 110 lines in 3 files changed: 0 ins; 109 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2338.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2338/head:pull/2338

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