- name: Create Avalanche daemon group
  become: true
  group:
    name: "{{ avalanche_daemon_group }}"
    system: true

- name: Create Avalanche daemon user
  become: true
  user:
    name: "{{ avalanche_daemon_user }}"
    group: "{{ avalanche_daemon_group }}"
    home: "{{ avalanche_daemon_home_dir }}"
    shell: /bin/false
    skeleton: false
    system: true

- name: Create Avalanche daemon group
  become: true
  group:
    name: "{{ avalanche_daemon_group }}"
    system: true

- name: Create Avalanche daemon user
  become: true
  user:
    name: "{{ avalanche_daemon_user }}"
    group: "{{ avalanche_daemon_group }}"
    home: "{{ avalanche_daemon_home_dir }}"
    shell: /bin/false
    system: true

Remove unnecessary, incorrect user parameter
ansible: Remove unnecessary, incorrect user parameter

skeleton is not a boolean parameter, and Ansible was (correctly) warning
about it. There is no need to specify it either.
