This reverts commit 3fd7fc4.
It was agreed that this change contained too much potential ecosystem
breakage, particularly around the inability to `delete` properties off a
`Url` object. It may be re-introduced for a later release, along with
better work on ecosystem compatibility.
Reviewed-By: Mikeal Rogers <firstname.lastname@example.org>
Reviewed-By: Ben Noordhuis <email@example.com>
Reviewed-By: Forrest L Norvell <firstname.lastname@example.org>
Reviewed-By: Chris Dickinson <email@example.com>
Reviewed-By: Isaac Z. Schlueter <firstname.lastname@example.org>
Reviewed-By: Jeremiah Senkpiel <email@example.com>