wifi: rtw89: cleanup unused rtwdev::roc_work

The needed one was moved to rtwvif::roc_work. And, rtwdev::roc_work is
unused. So, remove it.

Signed-off-by: Zong-Zhe Yang <[email protected]>
Signed-off-by: Ping-Ke Shih <[email protected]>
Link: https://patch.msgid.link/[email protected]

Author: Zong-Zhe Yang

drivers/net/wireless/realtek/rtw89/core.h

@@ -5729,7 +5729,6 @@ struct rtw89_dev {
 	struct delayed_work coex_rfk_chk_work;
 	struct delayed_work cfo_track_work;
 	struct delayed_work forbid_ba_work;
-	struct delayed_work roc_work;
 	struct delayed_work antdiv_work;
 	struct rtw89_ppdu_sts_info ppdu_sts;
 	u8 total_sta_assoc;