pd: complement pd section (#20500)

[ti-chi-bot]

This is an automated cherry-pick of #20500

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• v8.5 (TiDB 8.5 versions)
• v8.4 (TiDB 8.4 versions)
• v8.3 (TiDB 8.3 versions)
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• v7.5 (TiDB 7.5 versions)
• v7.1 (TiDB 7.1 versions)
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• v5.4 (TiDB 5.4 versions)

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• Delete files
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