Remove tools role from gluebuddy

The tools role is only used on servers which normal staff have SSH
access to since [1].

[1] 7da1e273 ("Cleanup tools")

Fixes: d88c0b95 ("Initialize gluebuddy host")

playbooks/gluebuddy.archlinux.org.yml

@@ -5,7 +5,6 @@
   remote_user: root
   roles:
     - { role: common }
-    - { role: tools }
     - { role: firewalld }
     - { role: sshd }
     - { role: root_ssh }