cw1200: Remove unused function pointer typedef cw1200_wsm_handler

Remove the 'cw1200_wsm_handler' typedef as it is not used.
Signed-off-by: Chen Lin <chen.lin5@zte.com.cn>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1613446918-4532-1-git-send-email-chen45464546@163.com

drivers/net/wireless/st/cw1200/bh.c

@@ -42,9 +42,6 @@ enum cw1200_bh_pm_state {
 	CW1200_BH_RESUME,
 };
 
-typedef int (*cw1200_wsm_handler)(struct cw1200_common *priv,
-	u8 *data, size_t size);
-
 static void cw1200_bh_work(struct work_struct *work)
 {
 	struct cw1200_common *priv =