staging: r8188eu: action category wmm is not used

The r8188eu driver does not handle the wmm action category. Remove the
empty handler function, the entry in OnAction_tbl and the define for the
category.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220502200652.143665-3-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_mlme_ext.c

@@ -35,7 +35,6 @@ static mlme_handler mlme_sta_tbl[] = {
 static struct action_handler OnAction_tbl[] = {
 	{RTW_WLAN_CATEGORY_BACK, "ACTION_BACK", &OnAction_back},
 	{RTW_WLAN_CATEGORY_PUBLIC, "ACTION_PUBLIC", on_action_public},
-	{RTW_WLAN_CATEGORY_WMM, "ACTION_WMM", &OnAction_wmm},
 	{RTW_WLAN_CATEGORY_P2P, "ACTION_P2P", &OnAction_p2p},
 };
 
@@ -3836,11 +3835,6 @@ exit:
 	return ret;
 }
 
-unsigned int OnAction_wmm(struct adapter *padapter, struct recv_frame *precv_frame)
-{
-	return _SUCCESS;
-}
-
 unsigned int OnAction_p2p(struct adapter *padapter, struct recv_frame *precv_frame)
 {
 	u8 *frame_body;

drivers/staging/r8188eu/include/ieee80211.h

@@ -599,7 +599,6 @@ enum rtw_ieee80211_category {
 	RTW_WLAN_CATEGORY_BACK = 3,
 	RTW_WLAN_CATEGORY_PUBLIC = 4, /* IEEE 802.11 public action frames */
 	RTW_WLAN_CATEGORY_TDLS = 12,
-	RTW_WLAN_CATEGORY_WMM = 17,
 	RTW_WLAN_CATEGORY_P2P = 0x7f,/* P2P action frames */
 };
 

drivers/staging/r8188eu/include/rtw_mlme_ext.h

@@ -577,8 +577,6 @@ unsigned int OnAction_back(struct adapter *padapter,
 			   struct recv_frame *precv_frame);
 unsigned int on_action_public(struct adapter *padapter,
 			      struct recv_frame *precv_frame);
-unsigned int OnAction_wmm(struct adapter *padapter,
-			  struct recv_frame *precv_frame);
 unsigned int OnAction_p2p(struct adapter *padapter,
 			  struct recv_frame *precv_frame);