Decommission decker server

It's been replaced by prometheus running internally, and uptimerobot checking.

ansible/roles/uptime_kuma/tasks/main.yml

@@ -1,17 +0,0 @@
-- name: Create install directory
-  file:
-    path: /opt/uptime-kuma
-    state: directory
-    owner: "{{ docker_user.name }}"
-    mode: "{{ docker_compose_directory_mask }}"
-  become: true
-
-- name: Install compose file
-  template:
-    src: files/docker-compose.yml
-    dest: /opt/uptime-kuma/docker-compose.yml
-    mode: "{{ docker_compose_file_mask }}"
-    owner: "{{ docker_user.name }}"
-    validate: docker-compose -f %s config
-  notify: restart uptime-kuma
-  become: true