[#42] Removing purge_networks as it no longer works with Ansible 11+

Author: alextreme

roles/django_app_docker/templates/networks.yml.j2

@@ -3,5 +3,4 @@ binds containers ONLY to the app network. -#}
 networks:
   - name: "{{ django_app_docker_name_prefix }}"
 network_mode: "{{ django_app_docker_name_prefix }}"
-purge_networks: true
 networks_cli_compatible: true