Speed up DOM removal by decoupling event.remove and removeData

[tr4nslator]

(as discussed  here on jQuery dev)

All jQuery operations that remove DOM nodes (including $.fn.replaceWith, $.fn.empty, $.fn.html, and $.fn.text) use $.fn.remove internally to centralize processing for removing events and expando data.

Many of these methods could be made faster by decoupling element death from DOM removal: once elements are killed, they could be replaced using the fastest method: Node.prototype.innerHTML for $.fn.empty, and Node.prototype.replaceChild for $.fn.replaceWith (which is 20% faster than the current method of appending and then removing).

[yehuda]

detach() which doesn't remove data is in #6474. Work to use it and use alternative mechanisms is still pending.

[dmethvin]

This was done in 1.4 by refactoring into removeData internally.