staging: wilc1000: remove unused flags in handle_cfg_param()

handle_cfg_param() receives a bit map that describes what to be changed.
Some of these bits flags aren't referred to from elsewhere and can be
removed.

Signed-off-by: Adham Abozaeid <adham.abozaeid@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>