Fix: Remove invalid Moonraker update_manager options

Removed unsupported options that cause warnings:
- allow_offline_updates (not a valid option)
- update_sensors (not a valid option)
- persisted_version (not a valid option)
- needs_refresh (not a valid option)

These options are either outdated or from a different update manager
implementation. Moonraker manages version tracking internally.

moonraker/update_manager.cfg

@@ -12,8 +12,3 @@ origin: https://git.sky-net.it/nocci/open4neptune-new.git
 install_script: install.sh
 managed_services: klipper
 primary_branch: main
-allow_offline_updates: False
-update_sensors:
-    /tmp/open4neptune-last-check
-persisted_version: /tmp/open4neptune-version
-needs_refresh: True