Remove Valid Host Check as it does not cover all Domains

[dunklesToast]

I get the idea of the check but it actually prevents a user from using Hostnames, that are valid.
For example german company "Märklin" has the domain märklin.de which is totally valid and has an SSL certificate but your regex does not allow it.
Also, there are a lot of other special characters which are allowed on certain hostnames but not in your regex making the package kind of useless.
After a small local test I'd remove the test completely since Node just threws ENOTFOUND if the host does not exist.