test: remove color setting and node warnings

[LingyuCoder]

Summary

Not to print Warning: The 'NO_COLOR' env is ignored due to the 'FORCE_COLOR' env being set. and ExperimentalWarning: VM Modules is an experimental feature and might change at any time during test.

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

[netlify]

✅ Deploy Preview for rspack canceled.

Name	Link
🔨 Latest commit	aff4e28
🔍 Latest deploy log	https://app.netlify.com/sites/rspack/deploys/67cfb79e0ac0b50008549290

[codspeed-hq]

CodSpeed Performance Report

Merging #9622 will not alter performance

_{Comparing test/node-warning-color (aff4e28) with main (a110f48)}

🎉 Hooray! codspeed-node just leveled up to 4.0.0!

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Summary

✅ 8 untouched benchmarks