remove duplicate Parameter

Author: rndmh3ro

.kitchen.yml

@@ -16,7 +16,7 @@ provisioner:
   require_ruby_for_busser: false
   ansible_verbose: true
   ansible_diff: true
-  hosts: all
+
   roles_path: ../ansible-mysql-hardening/
   playbook: default.yml
   requirements_path: requirements.yml