rtlwifi: rtl8723ae: Remove duplicate inclusion of fw_common.h

fw_common.h was included twice.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rtlwifi/rtl8723ae/hal_bt_coexist.c

@@ -32,7 +32,6 @@
 #include "dm.h"
 #include "fw.h"
 #include "../rtl8723com/fw_common.h"
-#include "../rtl8723com/fw_common.h"
 #include "phy.h"
 #include "reg.h"
 #include "hal_btc.h"