I don't think it'd be possible. The Yoda/Sidious fight in ROTS is extensive enough that it might be hard to edit out the lightning. However, it may only appear at the beginning of the fight, like Yoda/Dooku in AOTC. Then it would be much easier to remove. I'm quite curious to see how people will approach ROTS when the fan-edits begin for that film.
I don't think it'd be possible. The Yoda/Sidious fight in ROTS is extensive enough that it might be hard to edit out the lightning. However, it may only appear at the beginning of the fight, like Yoda/Dooku in AOTC. Then it would be much easier to remove. I'm quite curious to see how people will approach ROTS when the fan-edits begin for that film.