Use Settings instead of DeviceConfig to relax device ID dev option

The 'Disable device identifier restrictions' developer option
currently uses DeviceConfig to set whether the new access
restrictions should be disabled. However this API now requires
the WRITE_DEVICE_CONFIG permission and should only be used from
the server side. This change modifies the developer option to use the
Settings to relax the device identifier check, and the option will
be hidden if the new restrictions have been disabled from the server.

Bug: 129888611
Test: Manually verified device ID check was relaxed with option
      enabled. Also verified option is not displayed if DeiviceConfig
      option is set.

Change-Id: Id8759f2219e702c1f93a638d45ac99bce685383b