hpux: strftime, sort 

Expunge one of the conversion specifications passed to strftime(3) for
HPUX only. The %F spec in common libc implementations is equivalent to
'%Y-%m-%d', whereas on HPUX it's something entirely different, expanding
to the locale-specific full month name (i.e. March).

see https://cfengine.com/dev/issues/4934 and https://cfengine.com/dev/issues/4940