With the introduction of the "AppliedOSImage" and "AppliedFiles" MachineConfigNode (MCN) conditions in MCO-1675, the "AppliedFilesAndOS" MCN condition is no longer needed. Thus, "AppliedFilesAndOS" should be deprecated according to standard process for the Openshift API.

Note that deprecating this status should NOT occur until the MCO & MCN/Image Mode Status Reporting regression tests no longer reference the  `AppliedOSImage` condition.

Done when:

• All references to "AppliedFilesAndOS" are phased out MCO-side.
• The "AppliedFilesAndOS" condition is deprecated in the API.
• "AppliedFilesAndOS" is no longer included as an output for `oc get machineconfignodes -o wide`

References:

• Context on the standard deprecation pattern can be found here.