Sometimes having the QuickLaunch bar on the left is not what you want. Maybe you want all your navigation in the top navbar. I’ve seen several items on the web that can handle this, sometimes it was actual ASP.Net code, sometimes it was JavaScript, but there’s a very easy OTB way to take care of this.

Just go to Site Settings, and under the ‘Look and Feel’ section, click on the Treeview link. There, you will find a checkbox titled ‘Enable QuickLaunch’. Just uncheck that box and you’re good to go!