These docs are for an old release.
Info on upgrading to version 2/3
eventDestroy 1.6.3
Called before an event’s element is removed from the DOM.
function( event, element, view ) { }
event
is the Event Object
element
is a jQuery element that will be removed
This callback gets called once for every event element. It is a great way to tear down any plugins you might have applied in eventRender.