Staging: wlags49_h2: remove duplicated #include

Remove duplicated #include('s) in
  drivers/staging/wlags49_h2/wl_pci.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/wlags49_h2/wl_pci.c

@@ -81,7 +81,6 @@
 #include <asm/system.h>
 #include <asm/io.h>
 #include <asm/irq.h>
-#include <asm/system.h>
 #include <asm/bitops.h>
 #include <asm/uaccess.h>