[jdk21u-dev] RFR: 8342063: [21u][aix] Backport introduced redundant line in ProblemList

[Goetz Lindenmaier]

Just removed the line that exists twice.

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Commit messages:
 - 8342063: [21u][aix] Backport introduced redundant line in ProblemList

Changes: https://git.openjdk.org/jdk21u-dev/pull/1050/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1050&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342063
  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1050.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1050/head:pull/1050

PR: https://git.openjdk.org/jdk21u-dev/pull/1050