### Describe Your Changes
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### Checklist
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- [ ] My change adheres [VictoriaMetrics contributing
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This reverts commit 92b22581e6.
Reason for revert: too complex and slow approach for spellchecking task.
This approach may significantly slow down development pace. It also may take non-trivial
amounts of additional time and resources at CI/CD because of all this npm shit at cspell directory.
Note to @arkid15r : the idea with the ability to run spellchecker on all the VictoriaMetrics
codebase is great. But this shouldn't be mandatory pre-commit check. It is enough to have
a Makefile rule like `make spellcheck`, which could be run manually whenever spellcheck is needed
(e.g. once per month or once per quarter).
