Remove RBD examples

RBD support was not part of BFV support, as booting using a
ceph block device was removed from the specification for BFV
as it is highly ramdisk dependent and support for booting from
such devices is unlikely to ever land in some of the available
ramdisk boot tools, muchless ironic or integrated tooling.

Change-Id: I9ddea3ae691240524aa6b946e1a513104a3f7113

ironicclient/osc/v1/baremetal_volume_target.py

@@ -44,8 +44,8 @@ class CreateBaremetalVolumeTarget(command.ShowOne):
             dest='volume_type',
             metavar="<volume type>",
             required=True,
-            help=_("Type of the volume target, e.g. 'iscsi', 'fibre_channel', "
-                   "'rbd'."))
+            help=_("Type of the volume target, e.g. 'iscsi', "
+                   "'fibre_channel'."))
         parser.add_argument(
             '--property',
             dest='properties',
@@ -295,8 +295,8 @@ class SetBaremetalVolumeTarget(command.Command):
             '--type',
             dest='volume_type',
             metavar="<volume type>",
-            help=_("Type of the volume target, e.g. 'iscsi', 'fibre_channel', "
-                   "'rbd'."))
+            help=_("Type of the volume target, e.g. 'iscsi', "
+                   "'fibre_channel'."))
         parser.add_argument(
             '--property',
             dest='properties',

ironicclient/v1/volume_target_shell.py

@@ -142,7 +142,7 @@ def do_volume_target_list(cc, args):
     '-t', '--type',
     metavar="<volume type>",
     required=True,
-    help=_("Type of the volume target, e.g. 'iscsi', 'fibre_channel', 'rbd'."))
+    help=_("Type of the volume target, e.g. 'iscsi', 'fibre_channel'."))
 @cliutils.arg(
     '-p', '--properties',
     metavar="<key=value>",