Drop unnecessary management of swiftclient

One in glance::backend::swift is redundant because
glance::backend::multistore::swift already takes care of
swiftclient.

Also we don't have to install the client when only common default
values are set.

Change-Id: I40cb9274cb802c7dac0f34ee9f5727695c8a205b
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

manifests/backend/defaults/swift.pp

@@ -62,7 +62,6 @@ class glance::backend::defaults::swift (
   $swift_store_retry_get_count         = $facts['os_service_default'],
 ) {
   include glance::deps
-  include swift::client
 
   glance_api_config {
     'backend_defaults/swift_store_region':                  value => $swift_store_region;

manifests/backend/swift.pp

@@ -94,7 +94,6 @@ class glance::backend::swift (
   $swift_store_auth_user_domain_id      = undef,
 ) {
   include glance::deps
-  include swift::client
 
   warning('glance::backend::swift is deprecated. Use glance::backend::multistore::swift instead.')