How Do I Get Rid Of Navigation Bar Hamburger Icon?

Im building a game with blueprints and i cant seem to figure out how to remove this extra hamburger/menu/extra options icon in the navigation bar that has no use.

Image of Navigation Bar (the extra button is the 3 lines icon on the right) Screenshot - 24ca95047e3ae6b77b4b424384c06a24 - Gyazo