jmx-dev RFR: 8342338: Remove redundant IIOPURLTest.java

[Kevin Walls]

This test has been "skipping" since IIOP was removed (jdk 9).  Should be removed, no impact.

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Commit messages:
 - 8342338: Remove redundant IIOPURLTest.java

Changes: https://git.openjdk.org/jdk/pull/21534/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21534&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342338
  Stats: 79 lines in 1 file changed: 0 ins; 79 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/21534.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21534/head:pull/21534

PR: https://git.openjdk.org/jdk/pull/21534