Mullvad Leta account requirement changed

[jonah (Jonah Aragon)]

I will mark as approved because we definitely should remove this paragraph. Whether we should add it as a search engine on the search engines page should be a separate topic.

However, I suspect Mullvad would not really appreciate us recommending it generally since it still feels like a perk for Mullvad Browser & VPN users, even if you could technically use it in other browsers.