man: stop removing DISTCONFDIR lines

man: stop removing DISTCONFDIR lines

Presently when DISTCONFDIR is identical to /lib we remove the whole
line, since the man pages already have an /lib instance.

At the same time, there are in-text DISTCONFDIR entries, and removing
the whole line outright breaks the documentation.

Drop the removal line - worst case scenario we get a duplicate entry in
the synopsis.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Lucas De Marchi <lucas.de.marchi@gmail.com>