Revert "rbd: fetch the volumeIds from VGRContent's status for omap data"

This reverts commit e62e083.
The commit needs to be reverted as on further testing it was
found that fetching the omap data from status could mean that
we would trigger a modify operation during promotion of a
group which could lead to inconsistency.

Signed-off-by: Nikhil-Ladha <nikhilladha1999@gmail.com>

Author: Nikhil-Ladha

internal/controller/volumegroup/volumegroupreplicationcontent.go

@@ -207,16 +207,7 @@ func (r *ReconcileVGRContent) reconcileVGRContent(ctx context.Context, obj runti
 
 	reqName := vgrc.Name
 	groupHandle := vgrc.Spec.VolumeGroupReplicationHandle
-	volumeRefs := vgrc.Status.PersistentVolumeRefList
-	volumeIds := make([]string, len(volumeRefs))
-	for i := range volumeRefs {
-		pv := &corev1.PersistentVolume{}
-		err := r.client.Get(ctx, types.NamespacedName{Name: volumeRefs[i].Name}, pv)
-		if err != nil {
-			return fmt.Errorf("failed to get persistentvolume %s: %w", volumeRefs[i].Name, err)
-		}
-		volumeIds[i] = pv.Spec.CSI.VolumeHandle
-	}
+	volumeIds := vgrc.Spec.Source.VolumeHandles
 
 	if groupHandle == "" {
 		return errors.New("volume group replication handle is empty")