NMT tracking level had been mirrored by `_cmdline_tracking_level` to notice tracking level degradation due to resource exhaustion.
All that tracking level handling has simplified with 8256844: "Make NMT late-initializable". So this coding is not needed anymore.
All that tracking level handling has simplified with 8256844: "Make NMT late-initializable". So this coding is not needed anymore.
- relates to
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JDK-8256844 Make NMT late-initializable
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     - Resolved
 
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