nfsclient: remove temporary absents from migration
This should no longer be necessary and is actually
problematic as it is a directive to absent a path that is
otherwise managed as symlink in the correct cases, and not
managed at all in the incorrect case. We are absenting 'mount_path'
now here which is still the older model direct '/home' and
'/data/project'. These on NFS activated projects will never
return as an actual mount anymore as these symlinks do not show up