KAU to remove the auto generation prefix for CSS in Visual Studio Code?

Only climbed on VS Code c sublime. Please tell me how to remove the auto generation prefix for css properties. As I understand it, for the subject inside the editor responsible emmet. Configure in settings.json
"emmet.preferences": {
"css.autoInsertVendorPrefixes":false
}

does not give the desired result.
June 27th 19 at 15:06

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