RFR: 8344250: Obsolete the DontYieldALot flag

[David Holmes]

Please review this simple fix to remove all code related to the deprecated `DontYieldALot` flag, which is obsoleted in JDK 24.

Testing
- GHA (in progress)
- tiers 1-3 (in progress)

Thanks

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Commit messages:
 - 8344250: Obsolete the DontYieldALot flag

Changes: https://git.openjdk.org/jdk/pull/22120/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22120&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344250
  Stats: 44 lines in 18 files changed: 0 ins; 32 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/22120.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22120/head:pull/22120

PR: https://git.openjdk.org/jdk/pull/22120