disable old after_dig_node() callbacks

(don't split a digged node into neutral+dye)

init.lua

@@ -145,11 +145,15 @@ local default_dyes = {
 	"yellow"
 }
 
--- just a stub to keep old mods from crashing when expecting auto-coloring
+-- just stubs to keep old mods from crashing when expecting auto-coloring
+-- or getting back the dye on dig.
 
 function unifieddyes.recolor_on_place(foo)
 end
 
+function unifieddyes.after_dig_node(foo)
+end
+
 -- this helper function registers all of the recipes needed to create colored
 -- blocks with any of the dyes supported by that block's palette.
 
@@ -547,26 +551,6 @@ function unifieddyes.on_construct(pos)
 	meta:set_string("palette", "ext")
 end
 
--- call this in your node's after_dig_node to get the last-used dye back.
-
-function unifieddyes.after_dig_node(pos, oldnode, oldmetadata, digger)
-	local prevdye
-
-	if oldmetadata and oldmetadata.fields then
-		prevdye = oldmetadata.fields.dye
-	end
-
-	local inv = digger:get_inventory()
-
-	if prevdye and not (inv:contains_item("main", prevdye) and creative_mode) and minetest.registered_items[prevdye] then
-		if inv:room_for_item("main", prevdye) then
-			inv:add_item("main", prevdye)
-		else
-			minetest.add_item(pos, prevdye)
-		end
-	end
-end
-
 function unifieddyes.on_use(itemstack, player, pointed_thing)
 	local stackname = itemstack:get_name()
 	local playername = player:get_player_name()