It kinda makes sense if you just want to take out one guy. A regular missile is going to blow up the room and maybe collapse the building, killing a whole bunch of people. A missile that has it's explosives removed won't do that, but it could miss the target. But if you put some knives on it, it'll expand the area of death just enough that there's a high probability of killing the target (even with a near miss), but with no explosives it won't take out the building.

Just a bizarre aspect of war. If you want to reduce civilian casualties you gotta put fucking knives on your missiles.