http://www.gamesas.com/index.php?/topic/1177151-list-tes4edit-cleaning-list/page__p__17402405__fromsearch__1#entry17402405 Also, take a look at the linked guide, which will give you a very good overview of how to clean your mods.
Kvatch Rebuilt on its own does not have any dependencies on OOO, explicit or implicit, so don't worry about that during the cleaning. Make sure you do load the compatibility module while playing, though, otherwise one of the quests will be unfinishable.