staging: wilc1000: remove ip timeout timer

during_ip_timer is not required after removing the code that disables
powersave while the ip is being obtained.
Its handler clear_during_ip is also removed

Signed-off-by: Adham Abozaeid <adham.abozaeid@microchip.com>
Link: https://lore.kernel.org/r/20190725213125.2810-3-adham.abozaeid@microchip.com


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