Fix 'config run' by removing default mount.

In, pull #1822 mount logic was refactored where the default
mount using zero-value no longer makes sense and leads to
this failure:

"invalid argument "type=,src=,dst=:ro" for "--mount" flag: type is
required"

I think the intent here was to remove default mount.

kyaml/runfn/runfn.go

@@ -92,8 +92,6 @@ func (r *RunFns) init() {
 	// if containerFilterProvider hasn't been set, use the default
 	if r.containerFilterProvider == nil {
 		r.containerFilterProvider = func(image, path string, api *yaml.RNode) kio.Filter {
-			defaultMount := filters.StorageMount{}
-			r.StorageMounts = append(r.StorageMounts, defaultMount)
 			cf := &filters.ContainerFilter{Image: image, Config: api, StorageMounts: r.StorageMounts}
 			return cf
 		}