Remove unused mesa ores

mods/MAPGEN/mcl_biomes/init.lua

@@ -40,7 +40,8 @@ local function register_biomes()
 
 	Other intentionally missing biomes:
 	* River (generated by valleys and v7)
-	* Plateau (pure terrain)
+	* Plateau (terrain only)
+	* Mesa (Bryce) (terrain only)
 
 	Tricky are the beach (esp. stone beach) and mushroom island biomes as they have specific conditions we can't check in MT. :(
 	TODO: Find a way to position these biomes accordingly.
@@ -1052,69 +1053,9 @@ local function register_biomelike_ores()
 		biomes = { "extreme_hills_m" },
 	})
 
-	-- Mesa ores
+	-- Mesa strata (registered as sheet ores)
---[[
-	minetest.register_ore({
-		ore_type       = "sheet",
-		ore            = "mcl_core:redsandstone",
-		wherein        = {"mcl_colorblocks:hardened_clay"},
-		clust_scarcity = 1,
-		clust_num_ores = 12,
-		clust_size     = 10,
-		y_min     = 10,
-		y_max     = 30,
-		noise_threshold = 0.2,
-		noise_params = {offset=0, scale=15, spread={x=130, y=130, z=130}, seed=24, octaves=3, persist=0.70},
-		biomes = { "mesa" },
-	})
-]]
-
-	minetest.register_ore({
-		ore_type       = "sheet",
-		ore            = "mcl_core:dirt",
-		wherein        = {"mcl_colorblocks:hardened_clay"},
-		clust_scarcity = 1,
-		clust_num_ores = 12,
-		clust_size     = 4,
-		y_min     = -12,
-		y_max     = 7,
-		noise_threshold = 0.4,
-		noise_params = {offset=0, scale=15, spread={x=130, y=130, z=130}, seed=24, octaves=3, persist=0.70},
-		biomes = { "mesa" },
-	})
---[[
-
-	minetest.register_ore({
-		ore_type       = "sheet",
-		ore            = "mcl_core:redsand",
-		wherein        = { "mcl_colorblocks:hardened_clay"},
-		clust_scarcity = 1,
-		clust_num_ores = 12,
-		clust_size     = 10,
-		y_min     = 44,
-		y_max     = 70,
-		noise_threshold = 0.7,
-		noise_params = {offset=0, scale=15, spread={x=130, y=130, z=130}, seed=24, octaves=3, persist=0.70},
-		biomes = { "mesa" },
-	})
-
-	minetest.register_ore({
-		ore_type       = "sheet",
-		ore            = "mcl_core:redsand",
-		wherein        = {"mcl_core:redsandstone", "mcl_colorblocks:hardened_clay"},
-		clust_scarcity = 1,
-		clust_num_ores = 8,
-		clust_size     = 4,
-		y_min     = 4,
-		y_max     = 70,
-		noise_threshold = 0.4,
-		noise_params = {offset=0, scale=15, spread={x=130, y=130, z=130}, seed=24, octaves=3, persist=0.70},
-		biomes = { "mesa" },
-	})
-]]
-
-	-- Mesa strata
 
+	-- Helper function
 	-- Colors to use: silver (light grey), brown, orange, red, yellow, white
 	local stratum = function(y_min, height, color, seed)
 		if not height then