remove infrastructure-playbooks/rgw-standalone.yml

We don't need infrastructure-playbooks/rgw-standalone.yml since
site.yml.sample and site-cotainer.yml.sample can add a new RGW node to
an already deployed Ceph cluster.

Signed-off-by: Rishabh Dave <ridave@redhat.com>
(cherry picked from commit 6e8fb2b3ea)

infrastructure-playbooks/rgw-standalone.yml

@@ -1,20 +0,0 @@
----
-# Run ceph-rgw role standalone
-
-# Need to load the facts from mons because ceph-common needs them to generate the ceph.conf
-# and collect keys from a mon to bootstrap the rgw nodes
-- hosts: mons
-  become: True
-  tasks:
-  - import_role:
-      name: ceph-defaults
-  - import_role:
-      name: ceph-fetch-keys
-
-- hosts: rgws
-  become: True
-  tasks:
-  - import_role:
-      name: ceph-defaults
-  - import_role:
-      name: ceph-rgw