replace deprecated field

building_blocks/init.lua

@@ -573,8 +573,8 @@ minetest.register_tool("building_blocks:knife", {
 	tool_capabilities = {
 		max_drop_level=0,
 		groupcaps={
-			choppy={times={[2]=7.50, [3]=2.80}, maxwear=0.01, maxlevel=1},
-			fleshy={times={[2]=5.50, [3]=2.80}, maxwear=0.01, maxlevel=1}
+			choppy={times={[2]=7.50, [3]=2.80}, uses=100, maxlevel=1},
+			fleshy={times={[2]=5.50, [3]=2.80}, uses=100, maxlevel=1}
 		}
 	},
 })