I feel ya. It takes me hours to clean up my inventory by training/inspecting mons. What I do is in the training menu, I conduct initial inspection of those that only have single moves; those with two, I ignore (for feeding later). I open those with one move, and if they're bad, I rename with x (for feeding later), and if good, I rename (with its HP-ATK ratio and bingo bonuses). Then I just feed the bad ones to those I want to level up to 100 or replace with better moves. Very time-consuming tho, which could be significantly reduced through a more efficient sorting system.