Remove unnecessary use of become from some roles

This should make execution much faster

ansible/roles/prometheus/tasks/grafana.yml

@@ -8,7 +8,6 @@
     state: directory
     owner: "{{ docker_user.name }}"
     mode: "{{ docker_compose_directory_mask }}"
-  become: true
 
 - name: Install grafana compose file
   template:
@@ -18,4 +17,3 @@
     owner: "{{ docker_user.name }}"
     validate: docker-compose -f %s config
   notify: restart grafana
-  become: true