Remove the automatic cloudflared

[Cyb3r-Jak3]

…emoved

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What does this PR aim to accomplish?:

Removes old documentation about using cloudflared service install --legacy

How does this PR accomplish the above?:

Remove a section of the cloudflared guide.

Issue link: #679

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[yubiuser]

Thanks for your PR. Could you also please fix the admonition on line 51 while you're working on that file?

[Cyb3r-Jak3]

Fixed