[jdk17u-dev] RFR: 8307067: remove broken EnableThreadSMRExtraValidityChecks option

[Goetz Lindenmaier]

I backport this for parity with 17.0.9-oracle.

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Commit messages:
 - Backport 5e26e64cbfa4baf81024efeb57768458e59971f5

Changes: https://git.openjdk.org/jdk17u-dev/pull/1586/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1586&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8307067
  Stats: 11 lines in 3 files changed: 0 ins; 7 del; 4 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1586.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1586/head:pull/1586

PR: https://git.openjdk.org/jdk17u-dev/pull/1586