Don't skip authorized SSH keys if empty

Without this bugfix it's impossible to remove all authorized SSH keys
without also removing the file.

(cherry picked from commit dc8b460)

ansible/roles/root_account/tasks/main.yml

@@ -84,8 +84,7 @@
     exclusive: '{{ root_account__authorized_keys_exclusive|bool }}'
     state: 'present'
     user: 'root'
-  when: root_account__enabled|bool and root_account__combined_authorized_keys|d() and
-        root_account__authorized_keys_state != 'absent'
+  when: root_account__enabled|bool and root_account__authorized_keys_state != 'absent'
 
 - name: Remove /root/.ssh/authorized_keys file if requested
   file: