Remove "Cube" from node descriptions.

Consistent with everything else in the world, we assume that "cube"
is the default state for things to be in (this is NodeCore after
all) and only use shape descriptors for things like lumps, prills
and other non-cube versions of things that also exist as cubes.

mods/nc_fire/node.lua

@@ -53,7 +53,7 @@ end
 
 for num = 1, nodecore.fire_max do
 	minetest.register_node(modname .. ":coal" .. num, {
-			description = "Charcoal Cube",
+			description = "Charcoal",
 			tiles = {txrcoal(num) .. "^[noalpha"},
 			groups = { 
 				crumbly = 1,
@@ -102,7 +102,7 @@ end
 minetest.register_alias(modname .. ":fuel", modname .. ":ember2")
 
 minetest.register_node(modname .. ":ash", {
-		description = "Ash Cube",
+		description = "Ash",
 		tiles = {modname .. "_ash.png"},
 		groups = {
 			falling_node = 1,

mods/nc_lode/metallurgy.lua

@@ -52,7 +52,7 @@ end
 
 nodecore.register_lode("Block", {
 		type = "node",
-		description = "## Lode Cube",
+		description = "## Lode",
 		tiles = { modname .. "_#.png" },
 		light_source = 8,
 		crush_damage = 4