I could be wrong, but the psionics skills from Dreamscarred Press do not appear to have the code for adding the Skill Focus bonuses.
Is there a method to make Skill Focus work without those tags?
Sadly, no... I'd love to condense it down to a single tag using an If statement, but sadly for you I'm feeling lazy, sore, tired, and we have a better method coming down the pipe, so it is a very very low priority to mess with.
(I assume there's no particular reason that these BONUS tags are on a separate MOD line other than making things "look prettier.")
Just prettier formatting.