[fix] remove useless local ssh key

We don't have a use for a appliance-local ssh key for now, so let's not
add that trouble to our setup.

chi-appliance.py

@@ -168,11 +168,6 @@ def do_configure(argv):
                 '      synchronize:\n'
                 '        src: ' + confpath + '\n'
                 '        dest: ~/\n'
-                '    - name: Generate ssh-key for appliance\n'
-                '      user:\n'
-                '        name: cc\n'
-                '        state: present\n'
-                '        generate_ssh_key: yes\n'
                 '    - name: Execute ansible on frontend\n'
                 '      shell: ANSIBLE_HOST_KEY_CHECKING=False'
                 ' ansible-playbook -i inventory.yaml ' + playpath + '\n'