iot: remove ssh-key-dir package for F44+

Joel Capitaorequested to merge
jcapitao-rh/base-images:fix-iot-build into main

Since F44+, the package was retired and replaced with a OpenSSH config
The wildcards are supported in AuthorizedKeysFile since 10.0.

See [1] for more details

[1] https://github.com/coreos/fedora-coreos-config/pull/3885

Edited by Joel Capitao

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