Menu Item Settings > General
How to have an item without an arrow next to it
By default, items with submenus will be given an arrow icon to indicate that there is a submenu that can be revealed by interacting with it.
If you want to disable all the submenu indicators, you can do that globally in the UberMenu Control Panel.
However, if you want to disable it on only a specific menu item, you can use the Disable Submenu Indicator setting in the Menu Item Settings.