[http, windows] fix remove_cookie trying to expire a cookie before the Epoch (closes: #2087998) time.gmtime on windows will raise a ValueError if a negative argument is supplied

#! /bin/sh -e
#

if [ "$1" = remove -o "$1" = upgrade ]; then
  if which install-docs >/dev/null 2>&1; then
    install-docs -r cubicweb-doc
  fi
fi

#DEBHELPER#

exit 0