staging: wilc1000: fix line over 80 chars in remove_network_from_shadow()

Added changes to avoid line over 80 character issue in
remove_network_from_shadow().

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>