Remove Category Link From Navbit?

[Grunt]

What I would like to accomplish is to remove the link to forum categories in the navbit. As an example, if forums are arranged as:

Category 1
--Forum 1
----Subforum 1

When viewing Forum 1 instead of the navbit reading:

bbtitle > Category 1
Forum 1

It would read:

bbtitle > Forum 1


I've attempted some conditionals here and there but can't get it nailed down - any help would be greatly appreciated!