António Fernandes authored Jul 12, 2019 and Carlos Soriano committed Aug 27, 2019

It's a dead option since commit b80390d0

Hide it and drop it form the man page.

While we are at it, rearrange the code to group dead options together,
and elaborate on the code comment. Also, drop their descriptions, which
are useless for hidden options and may be wasting translators time.