main, vmm: Remove deprecated --vhost-user-blk

This has been superseded by using --disk with vhost_user=true and
socket=<socket>

Fixes: #678

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

vmm/src/api/openapi/cloud-hypervisor.yaml

@@ -208,10 +208,6 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/VhostUserNetConfig'
-        vhost_user_blk:
-          type: array
-          items:
-            $ref: '#/components/schemas/VhostUserBlkConfig'
         vsock:
           type: array
           items:
@@ -425,23 +421,6 @@ components:
         mac:
           type: string
 
-    VhostUserBlkConfig:
-      required:
-      - sock
-      type: object
-      properties:
-        sock:
-          type: string
-        num_queues:
-          type: integer
-          default: 1
-        queue_size:
-          type: integer
-          default: 128
-        wce:
-          type: boolean
-          default: true
-
     VsockConfig:
       required:
       - cid