Hiding duplicate spells obtained from different spell books

[Shindoku]

Is there any way I would be able to remove duplicate spells that appear on the select prepared spells screen? An entry is added for spells obtained through your own spellbook, but another entry is added for ones obtained from found spellbooks. A friend and I have been playing around with it and have found no such way ourselves, so far. I'm less concerned if a spell shows up multiple times throughout all of his spellbooks, just that he has the spell in at least one of them. It just becomes a bit annoying going through a bloated spell list to pick spells for the day, seeing something like six "detect magic". The only thing I can think of is removing the spell from the other spell books if he has it already, but that messes with the value of the book. If I'm missing something, or there is a work around please let me know! (An image is attached as I'm not sure how well I explained what I mean)