Remove functionality for cleaning anything other than entities:

For cleaning other objects it is recommended to use 'override' mod:
https://github.com/AntumMT/mod-override

init.lua

@@ -18,35 +18,9 @@ local function logDebug(msg)
 	end
 end
 
-local old_nodes = {}
+
 local old_entities = {}
 
--- Old/Missing nodes that should be replaced with something currently in game
-local replace_nodes = {}
-
-
--- "Replaces" an old/non-existent node
-local function replace_node(old_node, new_node)
-    core.register_alias(old_node, new_node)
-end
-
-
-for _,node_name in ipairs(old_nodes) do
-    core.register_node(':' .. node_name, {
-        groups = {old=1},
-    })
-end
-
-core.register_abm({
-    nodenames = {'group:old'},
-    interval = 1,
-    chance = 1,
-    action = function(pos, node)
-        core.remove_node(pos)
-    end,
-})
-
-
 -- Populate entities list from file in world path
 local e_list = nil
 local e_path = core.get_worldpath() .. '/clean_entities.txt'
@@ -80,8 +54,3 @@ for _, entity_name in ipairs(old_entities) do
         end,
     })
 end
-
--- Replace old nodes
-for _, node_group in pairs(replace_nodes) do
-    replace_node(node_group[1], node_group[2])
-end