feature request: EventEmitter#off() alias for EventEmitter#removeListener()

[jokeyrhyme]

• makes the API more symmetrical: we already have an EventEmitter#on() alias for EventEmitter#addListener()
• Wolfy87/EventEmitter has #off()
• Backbone.js has #off()
• this seems to be a fairly common pattern of convenience elsewhere in the ecosystem

Is this the sort of thing you'd welcome a PR for? Or is this not something you're interested having in core?

[jokeyrhyme]

Cross-posted with Node.js: nodejs/node-v0.x-archive#9332

[tellnes]

Here is some references. There is probably a few more that I've forgotten.
#540
nodejs/node-v0.x-archive#3338
nodejs/node-v0.x-archive#5352

[Fishrock123]

From #540

And off is weird. event listeners aren't light switches. "on" has a number of meanings, "off" is the opposite of only some of those meanings. "under" is also an antonym of "on"... but neither "under" nor "off" are antonyms of the meaning of "on" used by EE.

[jokeyrhyme]

Sorry about the duplicate. I swear I did search first. /shrug
Arguments against this make sense. :)