Another try to get rid of default creative without depending on it.

unified_inventory/api.lua

@@ -22,7 +22,15 @@ local homepos = {}
 unified_inventory.home_filename = minetest.get_worldpath()..'/unified_inventory_home'
 
 -- Create detached creative inventory after loading all mods
+-- Also 2nd attempt to disable default creative mod
 minetest.after(0.01, function()
+	
+	if creative_inventory then 
+		creative_inventory.set_creative_formspec = function(player, start_i, pagenum)
+		return
+		end
+	end
+
 	unified_inventory.items_list = {}
 	for name,def in pairs(minetest.registered_items) do
 		if (not def.groups.not_in_creative_inventory or def.groups.not_in_creative_inventory == 0)