Remove metal cutting quality from circular saw

This was added in #17875 based in taking the jokey description of the circular saw too seriously in #17838.
This applies the opposite and more sensible fix of adjusting the jokey description.

data/json/items/tools.json

@@ -1509,7 +1509,7 @@
     "type": "TOOL",
     "name": "circular saw (off)",
     "name_plural": "circular saws (off)",
-    "description": "A lightweight handheld cordless circular saw.  Spins a circular blade fast enough to cut wood, metal, zombies, or in an emergency, pizza.  The blade, while effective in combat, is hard to hit with due to its small size.",
+    "description": "A lightweight handheld cordless circular saw.  Spins a circular blade fast enough to cut wood, zombies, or in an emergency, pizza.  The blade, while effective in combat, is hard to hit with due to its small size.",
     "weight": 2940,
     "volume": 3,
     "price": 5000,
@@ -1545,7 +1545,7 @@
     "max_charges": 100,
     "turns_per_charge": 1,
     "revert_to": "circsaw_off",
-    "qualities": [ [ "CUT", 1 ], [ "SAW_W", 2 ], [ "SAW_M", 2 ], [ "BUTCHER", 60 ] ],
+    "qualities": [ [ "CUT", 1 ], [ "SAW_W", 2 ], [ "BUTCHER", 60 ] ],
     "use_action": "CIRCSAW_ON",
     "flags": [ "MESSY", "TRADER_AVOID", "NONCONDUCTIVE" ]
   },