NativeAOT: Revert min OS versions workaround for NativeAOT

[ivanpovazan]

This PR reverts changes introduced in: 6b3d62b

As these should not be needed anymore due to the dotnet/runtime fix: dotnet/runtime@f42efaa

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Fixes: #18477

[vs-mobiletools-engineering-service2]

🔥 Failed to compare API and create generator diff 🔥

Error: 'make' failed for the hash aafdad3.

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• xamarin.ios-16.5.0.744.pkg
• xamarin.mac-9.4.0.744.pkg

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✅ interdependent_binding_projects: All 7 tests passed. Html Report (VSDrops) Download
✅ install_source: All 1 tests passed. Html Report (VSDrops) Download
✅ introspection: All 8 tests passed. Html Report (VSDrops) Download
✅ linker: All 65 tests passed. Html Report (VSDrops) Download
✅ mac_binding_project: All 1 tests passed. Html Report (VSDrops) Download
✅ mmp: All 2 tests passed. Html Report (VSDrops) Download
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