Remove deprecated containerized

As we are moving towards v2.0.0 I think
it's a good time to remove the deprecated flag.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

cmd/cephcsi.go

@@ -60,9 +60,6 @@ func init() {
 	flag.BoolVar(&conf.IsControllerServer, "controllerserver", false, "start cephcsi controller server")
 	flag.BoolVar(&conf.IsNodeServer, "nodeserver", false, "start cephcsi node server")
 
-	// rbd related flags
-	flag.BoolVar(&conf.Containerized, "containerized", false, "whether run as containerized")
-
 	// cephfs related flags
 	flag.StringVar(&conf.MountCacheDir, "mountcachedir", "", "mount info cache save dir")
 	flag.BoolVar(&conf.ForceKernelCephFS, "forcecephkernelclient", false, "enable Ceph Kernel clients on kernel < 4.17 which support quotas")
@@ -173,9 +170,6 @@ func main() {
 	switch conf.Vtype {
 	case rbdType:
 		driver := rbd.NewDriver()
-		if conf.Containerized {
-			klog.Warning("containerized flag is deprecated and will be removed")
-		}
 		driver.Run(&conf, cp)
 
 	case cephfsType:

docs/deploy-rbd.md

@@ -33,7 +33,6 @@ make image-cephcsi
 | `--drivername`        | `rbd.csi.ceph.com`    | Name of the driver (Kubernetes: `provisioner` field in StorageClass must correspond to this value)                                                                                                                                                                                   |
 | `--nodeid`            | _empty_               | This node's ID                                                                                                                                                                                                                                                                       |
 | `--type`              | _empty_               | Driver type `[rbd | cephfs]` If the driver type is set to  `rbd` it will act as a `rbd plugin` or if it's set to `cephfs` will act as a `cephfs plugin`                                                                                                                              |
-| `--containerized`     | false                 | Whether running in containerized mode( This flag is deprecated)                                                                                                                                                                                                                      |
 | `--instanceid`        | "default"             | Unique ID distinguishing this instance of Ceph CSI among other instances, when sharing Ceph clusters across CSI instances for provisioning                                                                                                                                           |
 | `--metadatastorage`   | _empty_               | Points to where legacy (1.0.0 or older plugin versions) metadata about provisioned volumes are kept, as file or in as k8s configmap (`node` or `k8s_configmap` respectively)                                                                                                         |
 | `--pidlimit`          | _0_                   | Configure the PID limit in cgroups. The container runtime can restrict the number of processes/tasks which can cause problems while provisioning (or deleting) a large number of volumes. A value of `-1` configures the limit to the maximum, `0` does not configure limits at all. |

pkg/util/util.go

@@ -99,9 +99,6 @@ type Config struct {
 	IsNodeServer       bool // if set to true start node server
 	Version            bool // cephcsi version
 
-	// rbd related flag
-	Containerized bool // whether run as containerized
-
 	// cephfs related flags
 	ForceKernelCephFS bool // force to use the ceph kernel client even if the kernel is < 4.17