Fix elevator sound assignment

elevator.lua

@@ -199,7 +199,10 @@ minetest.register_craftitem("technology:elevator", {
 	end,
 })
 
-
+local metal_footstep = {
+	footstep = {name="metal_footstep", gain=0.8},
+	dig = {name="metal_footstep", gain = 0.8},
+}
 
 local ec = 0.05	-- size of electric cables
 local sc = 0.1	-- size of support cables
@@ -231,7 +234,7 @@ minetest.register_node("technology:elevator_rail", {
 	},
     walkable = true,
     groups = {mechanic=1, oddly_breakable_by_hand=1},
-    on_punch = metal_punch,
+    --on_punch = metal_punch,
     sounds = metal_footstep,
 })