Remove old deploy hook method superseded by pre-hook and post-hook methods

defaults/main.yml

@@ -58,11 +58,3 @@ certbot_keep_updated: true
 
 # Where to put Certbot when installing from source.
 certbot_dir: /opt/certbot
-
-# Restart this service after successful certificate creation:
-certbot_deployhook: |
-  {% for service in certbot_create_standalone_stop_services %}
-  if systemctl list-unit-files | grep -q "^{{ service }}.service"; then
-    systemctl restart {{ service }}
-  fi
-  {% endfor %}