Refactor to remove redundant calls to isStandardSyntaxMediaFeatureName utility

[romainmenke]

Which issue, if any, is this issue related to?

Closes #6848

Is there anything in the PR that needs further explanation?

These utilities aren't needed anymore.
@csstools/media-query-list-parser only parses standard CSS as media feature AST nodes.

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I think #6848 can be closed as completed after this change.

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[Mouvedia]

Can we wait for elirasza/stylelint-stylistic to be refactored first?

https://github.com/elirasza/stylelint-stylistic/blob/dce7ea440d44a8e6aa28251eca4e3fbd98a376ba/lib/rules/media-feature-name-case/index.js#L5

If not we will have to remove our recommendations for the plugins in the documentation.

[romainmenke]

I didn't know the functions from utils were part of the public API of Stylelint.
I assumed they were not given this comment : https://github.com/stylelint/stylelint/blob/main/docs/developer-guide/plugins.md#external-helper-modules

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I will restore these files.

[Mouvedia]

@romainmenke it's complicated: #6866

[ybiquitous]

To be honest, I'm not in favor of leaving unused and internal modules (see also #6866 (comment)). As a maintainer, I feel it isn't easy to care about internal modules used by plugins. 😓

However, only this time, we've removed many utilities toward v16 (see #7002), so we can delay removing unused modules. I think it's acceptable to remove isStandardSyntaxMediaFeatureName on the v16 branch.

Could you open a new PR to remove it for v16?

[ybiquitous]

Anyway, the series of refactoring work for #6848 is great! 👏🏼

Thank you so much for your effort! @romainmenke

[jeddy3]

Thank you.

Two minor requests, otherwise LGTM.

Anyway, the series of refactoring work for #6848 is great! 👏🏼

Totally agree!

[jeddy3]

LGTM, thank you!

[romainmenke]

Thank you again for the reviews on all this 🙇
Awesome to wrap this up!