Remove NFD related content from docs (dsr8)

Temporarily removing these files as they may be needed in the future.

Removed two rst files and updated the index file.

Story: 2010657
Task: 47939

Change-Id: I367aba319ce037c6109227df4a68d5414dfbf415
Signed-off-by: Dinesh Neelapu <dinesh.neelapu@windriver.com>

doc/source/node_management/kubernetes/index-node-mgmt-kub-5ff5993b9c60.rst

@@ -362,16 +362,16 @@ Host hardware management
    host_hardware_management/changing-hardware-components-for-a-worker-host
    host_hardware_management/configuration-changes-requiring-re-installation
 
+.. Temporarily removing these files as they may be needed in the future.
+   -----------------------------------------
+   Node Feature Discovery |prod| Application
+   -----------------------------------------
 
------------------------------------------
-Node Feature Discovery |prod| Application
------------------------------------------
+   .. toctree::
+      :maxdepth: 1
 
-.. toctree::
-   :maxdepth: 1
-
-   install-node-feature-discovery-nfd-starlingx-application-70f6f940bb4a
-   uninstall-node-feature-discovery-nfd-starlingx-application-a582bfdadfb8
+      install-node-feature-discovery-nfd-starlingx-application-70f6f940bb4a
+      uninstall-node-feature-discovery-nfd-starlingx-application-a582bfdadfb8
 
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 Provision BMC