Remove hiera data option

If you're passing in data directly from ansible, you're really passing
in facts. This will be followed by a patch that will copy hiera data
files.

Change-Id: Ib47347d7bbc5b9abeb71183be8e467a62f91d743

tasks/main.yml

@@ -6,6 +6,3 @@
     show_diff: "{{ show_diff|default(omit) }}"
     facts: "{{ facts|default(omit) }}"
     facter_basename: "{{ facter_basename|default(omit) }}"
-    hiera: "{{ hiera|default(omit) }}"
-    hiera_datadir: "{{ hiera_datadir|default(omit) }}"
-    hiera_basename: "{{ hiera_basename|default(omit) }}"