RFR: 8307244: Remove redundant class RMIIIOPServerImpl

Tue May 2 18:05:11 UTC 2023

Removal of class, looks like it was missed in the JDK9 removal of RMIIIOP.
This class is not referenced by other classes or tests.

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Commit messages:
 - 8307244: Remove redundant class RMIIIOPServerImpl

Changes: https://git.openjdk.org/jdk/pull/13758/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13758&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8307244
  Stats: 102 lines in 2 files changed: 0 ins; 101 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/13758.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13758/head:pull/13758

PR: https://git.openjdk.org/jdk/pull/13758