[jdk21u-dev] RFR: 8311581: Remove obsolete code and comments in TestLVT.java

[Goetz Lindenmaier]

I backport this to keep the 21u test suite up-to-date. This will simplify future test backports.

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Commit messages:
 - Backport 27de536b409aa80c8b8bb452160329be52814e0b

Changes: https://git.openjdk.org/jdk21u-dev/pull/54/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=54&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8311581
  Stats: 5 lines in 1 file changed: 0 ins; 5 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/54.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/54/head:pull/54

PR: https://git.openjdk.org/jdk21u-dev/pull/54