rtlwifi: btcoexist: Remove CamelCase variable

File halbt_precomp.h contains the only CamelCase value, namely
GetDefaultAdapter, but that macro is never used, thus it is deleted.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/btcoexist/halbt_precomp.h

@@ -28,8 +28,6 @@
 #include "halbtc8821a2ant.h"
 #include "halbtc8821a1ant.h"
 
-#define GetDefaultAdapter(padapter)	padapter
-
 #define BIT0	0x00000001
 #define BIT1	0x00000002
 #define BIT2	0x00000004