Remove nonstandard URL.originFor

[domenic]

Apparently the new WHATWG URL API includes a nonstandard static method originFor. Its presence encourages writing code that is not interoperable between Node.js and browsers. It should be removed.

[jasnell]

Not really removed so much as moved... it should hang off the require('url') module rather than require('url').URL

[domenic]

Hmm, what is the benefit of that over new URL(...).origin?

[targos]

Moved to require('url') in abc1633.