Remove outdated docs for setting up eslint in editor

[LukasWerfel]

My first, naive approach was just to remove that section. If we should rather modify it or leave it for older versions, let me know!

closes: #6083

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[attaradev]

I think they will appreciate if you don't link to the babel docs, but rather add the steps to follow to add the feature

[Timer]

Yeah, let's modify instead of remove because this is only for newly created projects. People who are migrating to newer version or accidentally remove the section might still need these docs.

[LukasWerfel]

@Timer Updated it. I am not a native speaker so it very well might have some grammatical errors or just wont sound natural. Let me know what you think!

[Timer]

Nope, this is good. Thanks!