Temporarily remove Confidential Containers documentation (#258)

Signed-off-by: Andrew Chen <[email protected]>

Author: chenopis

gpu-operator/getting-started.rst

@@ -287,7 +287,7 @@ To view all the options, run ``helm show values nvidia/gpu-operator``.
      - Specifies the default type of workload for the cluster, one of ``container``, ``vm-passthrough``, or ``vm-vgpu``.
 
        Setting ``vm-passthrough`` or ``vm-vgpu`` can be helpful if you plan to run all or mostly virtual machines in your cluster.
-       Refer to :doc:`KubeVirt <gpu-operator-kubevirt>`, :doc:`Kata Containers <gpu-operator-kata>`, or :doc:`Confidential Containers <gpu-operator-confidential-containers>`.
+       Refer to :doc:`KubeVirt <gpu-operator-kubevirt>`, or :doc:`Kata Containers <gpu-operator-kata>`.
      - ``container``
 
    * - ``toolkit.enabled``