remove page-title-updated workaround for #3380

lib/browser/api/web-contents.js

@@ -268,13 +268,6 @@ WebContents.prototype._init = function () {
     this.reload()
   })
 
-  // Delays the page-title-updated event to next tick.
-  this.on('-page-title-updated', function (...args) {
-    setImmediate(() => {
-      this.emit('page-title-updated', ...args)
-    })
-  })
-
   app.emit('web-contents-created', {}, this)
 }