RFR: 8344976: Remove the jmx.invoke.getters compatibility property

[Kevin Walls]

The System Property "jmx.invoke.getters" was added in [JDK-4949203](https://bugs.openjdk.org/browse/JDK-4949203) to optionally be compatible with a time before JDK-6, when calling invoke on getters and setters was permitted.

It should be removed.

-------------

Commit messages:
 - 8344976: Remove the jmx.invoke.getters compatibility property

Changes: https://git.openjdk.org/jdk/pull/23132/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23132&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344976
  Stats: 64 lines in 2 files changed: 0 ins; 56 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/23132.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23132/head:pull/23132

PR: https://git.openjdk.org/jdk/pull/23132