Remove DB backup.

Haters gonna hate.

init.lua

@@ -4,7 +4,6 @@ xban = { }
 local MP = minetest.get_modpath(minetest.get_current_modname())
 
 dofile(MP.."/serialize.lua")
-dofile(MP.."/shutil.lua")
 
 local db = { }
 local tempbans = { }
@@ -261,10 +260,6 @@ local function load_db()
 	end
 end
 
--- Backup database
-shutil.copy_file(DB_FILENAME,
-  DB_FILENAME.."."..os.date("%Y%m%d%H%M%S"))
-
 minetest.register_on_shutdown(save_db)
 minetest.after(SAVE_INTERVAL, save_db)
 load_db()