How to remove all navigationbar back button title

Question

When I push a UIViewController, it has some title in back button at new UIViewController, if the title has a lot of text, It does not look good in

Answer 1

I don't know why but I found problem with hiding back button title in iPhone pluses but in device without plus shows correct with

leftBarButtonItem.title = ""

So I found simple way. It is set tint color to clear in NavigationBar of NavigationViewController in autolayout. It may be problem if you use icons or text tiles with tint. But in my case I don't use it as all.