I just maxed out my intel tree, and got the second trait, "Improved predictive algorithms." This caused the first trait from this spec tree, "Predictive algorithms," to get stuck in its trait slot. It is not removable. My other two ship traits, the new one included, can be removed normally.
did you tried removing it at difference places? I remember that i could not clear the last "trait box" which i've got when I'd reached level 60, at least not when in space though.
Comments
The trait should be de-selectable...