As discussed in the forum Icons in 2.0 Navbar?
Currently icons are shown on the navigation bar by default and can be removed in one of two ways:
- Hiding them using CSS
- Overriding the base renderer to not show them
I have no strong opinion on this matter and I'm quite happy to change the default for the base renderer to not shown them in which case for those who do want them you would need to override the base renderer to show them
For note: overriding a renderer requires at least a good understanding of both PHP and Moodle