staging: wlan-ng: Remove unused struct wlan_ie_ssid references

Pointer reference to struct wlan_ie_ssid is added as a member variable
to 5 different structures. However, these references are never used.
Remove such unused struct references. The cleanup also renders the
struct useless; so remove it as well.
Issue identified as part of coccicheck based code analysis.
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Suggested-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Deepak R Varma <drv@mailo.com>
Link: https://lore.kernel.org/r/6e39ef59d01d65a1e179f6aecfbb0d68b81fa257.1667308828.git.drv@mailo.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wlan-ng/p80211mgmt.h

@@ -225,13 +225,6 @@ struct wlan_ie {
 	u8 len;
 } __packed;
 
-/*-- Service Set Identity (SSID)  -----------------*/
-struct wlan_ie_ssid {
-	u8 eid;
-	u8 len;
-	u8 ssid[1];		/* may be zero, ptrs may overlap */
-} __packed;
-
 /*-- Supported Rates  -----------------------------*/
 struct wlan_ie_supp_rates {
 	u8 eid;
@@ -319,7 +312,6 @@ struct wlan_fr_beacon {
 	u16 *bcn_int;
 	u16 *cap_info;
 	/*-- info elements ----------*/
-	struct wlan_ie_ssid *ssid;
 	struct wlan_ie_supp_rates *supp_rates;
 	struct wlan_ie_fh_parms *fh_parms;
 	struct wlan_ie_ds_parms *ds_parms;
@@ -372,7 +364,6 @@ struct wlan_fr_assocreq {
 	u16 *cap_info;
 	u16 *listen_int;
 	/*-- info elements ----------*/
-	struct wlan_ie_ssid *ssid;
 	struct wlan_ie_supp_rates *supp_rates;
 
 };
@@ -407,7 +398,6 @@ struct wlan_fr_reassocreq {
 	u16 *listen_int;
 	u8 *curr_ap;
 	/*-- info elements ----------*/
-	struct wlan_ie_ssid *ssid;
 	struct wlan_ie_supp_rates *supp_rates;
 
 };
@@ -439,7 +429,6 @@ struct wlan_fr_probereq {
 	void *priv;
 	/*-- fixed fields -----------*/
 	/*-- info elements ----------*/
-	struct wlan_ie_ssid *ssid;
 	struct wlan_ie_supp_rates *supp_rates;
 
 };
@@ -457,7 +446,6 @@ struct wlan_fr_proberesp {
 	u16 *bcn_int;
 	u16 *cap_info;
 	/*-- info elements ----------*/
-	struct wlan_ie_ssid *ssid;
 	struct wlan_ie_supp_rates *supp_rates;
 	struct wlan_ie_fh_parms *fh_parms;
 	struct wlan_ie_ds_parms *ds_parms;