clean old nodes

mods/_clean/README.txt

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+This mod deletes old blocks and objects from Minetest.
+Insert the names of the old nodes in the table "old_nodes" like this:
+local old_nodes = {"modname:nodename1", "modname:nodename2"}
+The nodes will automatically be removed when a player is close to them.
+The same will happen to entities when you insert there names
+into the table "old_entities".
+
+License:
+Sourcecode: WTFPL

mods/_clean/init.lua

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+local old_nodes = {"flowers:flower_seaweed"}
+local old_entities = {}
+
+for _,node_name in ipairs(old_nodes) do
+	minetest.register_node(":"..node_name, {
+		groups = {old=1},
+	})
+end
+
+minetest.register_abm({
+	nodenames = {"group:old"},
+	interval = 1,
+	chance = 1,
+	action = function(pos, node)
+		minetest.env:remove_node(pos)
+	end,
+})
+
+for _,entity_name in ipairs(old_entities) do
+	minetest.register_entity(":"..entity_name, {
+		on_activate = function(self, staticdata)
+			self.object:remove()
+		end,
+	})
+end