qlge: remove duplicated #include

Removed duplicated include <linux/init.h> in files below
  drivers/net/qlge/qlge_ethtool.c
  drivers/net/qlge/qlge_main.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>