GH-33450: [C++] Remove GlobalForkSafeMutex #49033
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This functionality is unused now that we have a proper atfork facility.
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WillAyd
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Jan 27, 2026
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Rationale for this change
This functionality is unused now that we have a proper atfork facility.
Are these changes tested?
By existing CI tests.
Are there any user-facing changes?
Removing an API that was always meant for internal use (though we didn't flag it explicitly as internal).