Fix integration test role syntax.

This does not fix the tests themselves, only the syntax (converting from playbooks to roles).
The aix_devices test fails due to use of unsupported state values.

test/integration/targets/aix_devices/tasks/main.yml

@@ -1,9 +1,3 @@
----
-- name: AIX devices tests
-  hosts: localhost
-  connection: local
-
-  tasks:
 - name: Scan new devices.
   aix_devices:
     device: all

test/integration/targets/aix_filesystem/tasks/main.yml

@@ -1,7 +1,3 @@
----
-- name: Testing aix_filesystem module.
-  hosts: lpar24
-  tasks:
 - name: Umounting /testfs
   aix_filesystem:
     filesystem: /testfs