staging: wilc1000: remove multiple blank lines

This patch removes multiple blank lines found by checkpatch

CHECK: Please don't use multiple blank lines
FILE: drivers/staging/wilc1000/host_interface.c:5343:
FILE: drivers/staging/wilc1000/host_interface.c:5372:
FILE: drivers/staging/wilc1000/host_interface.c:5389:

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