The topics section of the ceph common problems troubleshooting guide
contained many subsection entries for symptoms, investigation and
solution.
Apart from not having working links,
these subsection entries don't add any real value:
They are well visible within the overarching section
and in the toc on the right side.
This change cleans the toc by removing these unnecessary subsection
entries.
This also reduces the number of nonexisting anchor messages
of make docs-build from 50 to 18.
Signed-off-by: Michael Adam <obnox@samba.org>
(cherry picked from commit 4ed4c04550)