staging: rtl8723au: Remove duplicate inclusion of wlan_bssdef.h

wlan_bssdef.h was included twice.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/include/drv_types.h

@@ -38,7 +38,6 @@ enum _NIC_VERSION {
 #include <rtw_ht.h>
 
 #include <rtw_cmd.h>
-#include <wlan_bssdef.h>
 #include <rtw_xmit.h>
 #include <rtw_recv.h>
 #include <hal_intf.h>