Merge pull request ceph#57947 from zdover23/wip-doc-2024-06-10-start-rm-intro

doc/start: remove "intro.rst"

<Reviewed-by: Cole Mitchell <[email protected]>

Author: zdover23

doc/start/index.rst

@@ -97,7 +97,3 @@ recover dynamically.
          get-involved
          documenting-ceph
 
-.. toctree::
-   :maxdepth: 2
-
-   intro