Drop spec_url for function.arguments (#5444)
Drop spec_url for function.arguments (#5444)

* Drop spec_url for function.arguments

function.arguments is deprecated and no longer in the ES spec; drop the
broken https://tc39.es/ecma262/#sec-arguments-object spec_url for it.

* Mark function.arguments non-standard

chrisdavidmills/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data