Move sub-namespace typedefs to typedefs.js

Here too there is one problem case.

src/ol/events.js

@@ -61,40 +61,6 @@ ol.events.KeyCode = {
 ol.events.LISTENER_MAP_PROP_ = 'olm_' + ((Math.random() * 1e4) | 0);
 
 
-/**
- * @typedef {EventTarget|ol.events.EventTarget|
- *     {addEventListener: function(string, Function, boolean=),
- *     removeEventListener: function(string, Function, boolean=),
- *     dispatchEvent: function(string)}}
- */
-ol.events.EventTargetLike;
-
-
-/**
- * Key to use with {@link ol.Observable#unByKey}.
- *
- * @typedef {{bindTo: (Object|undefined),
- *     boundListener: (ol.events.ListenerFunctionType|undefined),
- *     callOnce: boolean,
- *     deleteIndex: (number|undefined),
- *     listener: ol.events.ListenerFunctionType,
- *     target: (EventTarget|ol.events.EventTarget),
- *     type: string}}
- * @api
- */
-ol.events.Key;
-
-
-/**
- * Listener function. This function is called with an event object as argument.
- * When the function returns `false`, event propagation will stop.
- *
- * @typedef {function(ol.events.Event)|function(ol.events.Event): boolean}
- * @api
- */
-ol.events.ListenerFunctionType;
-
-
 /**
  * @param {ol.events.Key} listenerObj Listener object.
  * @return {ol.events.ListenerFunctionType} Bound listener.