Removed obsolete or useless code

Some commented code makes no sense because there is not comment as to why it's commented out. Removed.

ferns/fern.lua

@@ -101,32 +101,6 @@ minetest.register_node("ferns:fern_01", {
 -----------------------------------------------------------------------------------------------
 -- Spawning
 -----------------------------------------------------------------------------------------------
---[[plantslib:spawn_on_surfaces({
-	spawn_delay = 1200,
-	spawn_plants = {"ferns:fern"},
-	spawn_chance = 800,
-	spawn_surfaces = {
-		"default:dirt_with_grass", 
-		"default:mossycobble", 
-		"dryplants:grass_short", 
-		"default:jungletree",
-		"stoneage:grass_with_silex"
-	},
-	seed_diff = 329,
-})
-plantslib:spawn_on_surfaces({
-	spawn_delay = 1200,
-	spawn_plants = {"ferns:fern_mid"},
-	spawn_chance = 400,
-	spawn_surfaces = {
-		"default:dirt_with_grass", 
-		"default:mossycobble", 
-		"dryplants:grass_short", 
-		"default:jungletree",
-		"stoneage:grass_with_silex"
-	},
-	seed_diff = 329,
-})]]
 
 assert(abstract_ferns.config.Lady_fern == true)
 

ferns/gianttreefern.lua

@@ -98,8 +98,6 @@ minetest.register_node("ferns:tree_fern_leafs_giant", {
 	visual_scale = math.sqrt(8),
 	wield_scale = {x=0.175, y=0.175, z=0.175},
 	paramtype = "light",
-	--paramtype2 = "facedir",
-	--tiles = {"[combine:"..TSS..T1.."ferns_5.png"..T2.."ferns_6.png"..T3.."ferns_7.png"..T4.."ferns_8.png^[transformFX^[combine:"..TSS..T1.."ferns_5.png"..T2.."ferns_6.png"..T3.."ferns_7.png"..T4.."ferns_8.png"},
 	tiles = {"ferns_fern_tree_giant.png"},
 	inventory_image = "ferns_fern_tree.png",
 	walkable = false,
@@ -299,10 +297,6 @@ if abstract_ferns.config.Giant_Tree_Ferns_in_Jungle == true then
 		near_nodes_vertical = 2,--4,
 		near_nodes_count = 1,
 		plantlife_limit = -0.9,
-		--humidity_max = 0.39,--1.0,
-		--humidity_min = 0.5,
-		--temp_max = -1,-- -1.2,-- -0.5, -- ~ 55C
-		--temp_min = -0.35,-- -0.07, -- ~ 25C
 	},
 	abstract_ferns.grow_giant_tree_fern
 	)

ferns/treefern.lua

@@ -197,8 +197,7 @@ if abstract_ferns.config.Tree_Ferns_in_Jungle == true then
 		surface = {
 			"default:dirt_with_grass",
 			"default:sand",
-			"default:desert_sand"--,
-			--"dryplants:grass_short"
+			"default:desert_sand",
 		},
 		max_count = 35,--27,
 		avoid_nodes = {"default:tree"},