fixing redundant prerequisites

[Nyhme]

I think paizo should add some of the feats and abilities as an option to fullfilling prerequisites. Like a seer elf would never need the arcane sense skill but if they want arcane lords they would have to grab it. After you get the graceful leaper feat it and your skill in acrobatics should be the prerequisites for powerful leaper, wall jump quick jump etc.. acrobatic performer and expert in acrobatics should be an alternate prerequisite for shadowdancer instead of just expert in performance.