staging: wilc1000: remove multiple blank in host_int_remove_wep_key

This patch removes multiple blank in host_int_remove_wep_key found by
checkpatch.

CHECK: Please don't use multiple blank lines
FILE: drivers/staging/wilc1000/host_interface.c:4299:
FILE: drivers/staging/wilc1000/host_interface.c:4309:
FILE: drivers/staging/wilc1000/host_interface.c:4315:

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>