swagger: removes the schema type for PodSpecGenerator $ref

When using a $ref, the type is ignored and it can confuse the openapi codegen
and make it fails with this error:

  attribute paths.'/libpod/pods/create'(post).[create].type is unexpected

This change removes the schema type attribute.

Signed-off-by: Tristan Cacqueray <tdecacqu@redhat.com>

pkg/api/server/register_pods.go

@@ -36,7 +36,6 @@ func (s *APIServer) registerPodsHandlers(r *mux.Router) error {
 	//   name: create
 	//   description: attributes for creating a pod
 	//   schema:
-	//     type: object
 	//     $ref: "#/definitions/PodSpecGenerator"
 	// responses:
 	//   200: