Make it not possible to get coal by cooking trees

mods/default/init.lua

@@ -463,18 +463,6 @@ minetest.register_craft({
 	recipe = "default:sand",
 })
 
-minetest.register_craft({
-	type = "cooking",
-	output = "default:coal_lump",
-	recipe = "default:tree",
-})
-
-minetest.register_craft({
-	type = "cooking",
-	output = "default:coal_lump",
-	recipe = "default:jungletree",
-})
-
 minetest.register_craft({
 	type = "cooking",
 	output = "default:stone",