CLEANUP: contrib/prometheus-exporter: remove unused includes

unless I'm wrong, those includes are no longer needed.  The only recent
one I remember is ssl-sock include since commit
5d9b8f3c9347a1a10b86f81d70b22c3cab0e6925 ("MINOR:
contrib/prometheus-exporter: use fill_info for process dump") where we
make use of the code from stats.c

Signed-off-by: William Dauchy <wdauchy@gmail.com>
1 file changed