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Update settings.md

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docs/en/operations/settings/settings.md
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@ -854,8 +854,6 @@ For example, when reading from a table, if it is possible to evaluate expression
Default value: the number of physical CPU cores.
If less than one SELECT query is normally run on a server at a time, set this parameter to a value slightly less than the actual number of processor cores.
For queries that are completed quickly because of a LIMIT, you can set a lower ‘max_threads’. For example, if the necessary number of entries are located in every block and max_threads = 8, then 8 blocks are retrieved, although it would have been enough to read just one.
The smaller the `max_threads` value, the less memory is consumed.