hwmon/f71882fg: Remove bogus temp2_type for certain models

Remove the temp2_type sysfs files for f8000 / f71858fg models,
this got in accidentally and is wrong as these models don't have a
Temperature Sensor Type Register at all.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>