Remove watcher onChanged() call on boot

This change removes the onChanged() call in
updateDeveloperOptionsWatcher() if it is being called because the boot
completed intent was received. This is because developer options can be
assumed not to have been toggled during a reboot.

Test: Manually checked that functions related to developer options being
      disabled (e.g. QS tile removed, ongoing traces stopped) are still
      correct.
Bug: 243433714
Change-Id: Ie9b01f646766286bb0354c9577917f760f175d43
3 files changed