[jdk17u-dev] RFR: 8294137: Review running times of java.math tests

[Goetz Lindenmaier]

I backport this for parity with 17.0.12-oracle.

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Commit messages:
 - Backport 51035a75e493f64b26f78e7fc87f6f6e536e4f56

Changes: https://git.openjdk.org/jdk17u-dev/pull/2359/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2359&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294137
  Stats: 132 lines in 3 files changed: 53 ins; 8 del; 71 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2359.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2359/head:pull/2359

PR: https://git.openjdk.org/jdk17u-dev/pull/2359