staging: wilc1000: remove inetaddr notifier

Driver registers an inetaddr notifier to disable powersave while the ip
address is being obtained which should be controlled only by cfg80211.

Signed-off-by: Adham Abozaeid <adham.abozaeid@microchip.com>
Link: https://lore.kernel.org/r/20190725213125.2810-2-adham.abozaeid@microchip.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>