staging: dgnc: dgnc_kcompat.h: remove unused macro

This patch removes the macro PARM_INT after removing all the variables
that depended on it.

Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>