vars_files doesn't need to be specified in our roles

Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>

roles/taskotron/resultsdb-backend/tasks/main.yml

@@ -63,8 +63,6 @@
     - fedora-messaging
 
 - name: copy fedora-messaging certificates
-  vars_files:
-    - /srv/private/ansible/vars.yml
   copy:
     src: "{{ item.src }}"
     dest: "/etc/pki/rabbitmq/{{ item.dest }}"
@@ -98,6 +96,7 @@
   when: env == "staging"
   tags:
     - fedora-messaging
+
 # this command will clear the exising database and it's now being run every time, regardless of whether
 # /etc/resultsdb-is-init exists or not. We've already lost a lot of data, so commenting this command out
 # while we figure out how to handle the problem