RFR: 8291578: Remove JMX related tests from ProblemList-svc-vthreads.txt

[Chris Plummer]

These tests do not belong in ProblemList-svc-vthreads.txt. This problem list is meant for tests that fail when the debuggee is run with the virtual thread wrapper. These tests are not setup to run in that mode, and therefore never are. They fail when the test itself is run with the jtreg virtual thread wrapper. That support is only in the loom repo, and tests that fail due to the jtreg virtual thread wrapper belong in ProblemList-vthread.txt in the loom repo.

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Commit messages:
 - Remove some jmx tests from svc-vthread problem list.

Changes: https://git.openjdk.org/jdk/pull/9707/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9707&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8291578
  Stats: 22 lines in 1 file changed: 0 ins; 22 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/9707.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9707/head:pull/9707

PR: https://git.openjdk.org/jdk/pull/9707