Staging: rtl8192u: Remove old WIRELESS_EXT support

Remove support for building against ancient WIRELESS_EXT versions,
only leaving support for the current version: 22

Signed-off-by: Joel Pelaez Jorge <joelpelaez@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/rtl8192u/r8192U_wx.c b/drivers/staging/rtl8192u/r8192U_wx.c
index 72db773..abae163 100644
--- a/drivers/staging/rtl8192u/r8192U_wx.c
+++ b/drivers/staging/rtl8192u/r8192U_wx.c
@@ -319,10 +319,8 @@
 	}
 	range->num_frequency = val;
 	range->num_channels = val;
-#if WIRELESS_EXT > 17
 	range->enc_capa = IW_ENC_CAPA_WPA|IW_ENC_CAPA_WPA2|
 			  IW_ENC_CAPA_CIPHER_TKIP|IW_ENC_CAPA_CIPHER_CCMP;
-#endif
 	tmp->scan_capa = 0x01;
 	return 0;
 }
@@ -732,7 +730,6 @@
 	return err;
 }
 
-#if (WIRELESS_EXT >= 18)
 //hw security need to reorganized.
 static int r8192_wx_set_enc_ext(struct net_device *dev,
 					struct iw_request_info *info,
@@ -842,7 +839,7 @@
 	up(&priv->wx_sem);
 	return ret;
 }
-#endif
+
 static int r8192_wx_set_gen_ie(struct net_device *dev,
 					struct iw_request_info *info,
 					union iwreq_data *data, char *extra)
@@ -890,11 +887,7 @@
 	NULL,                     /* SIOCWIWTHRSPY */
 	r8192_wx_set_wap,	  /* SIOCSIWAP */
 	r8192_wx_get_wap,         /* SIOCGIWAP */
-#if (WIRELESS_EXT >= 18)
 	r8192_wx_set_mlme,                     /* MLME-- */
-#else
-	 NULL,
-#endif
 	dummy,                     /* SIOCGIWAPLIST -- deprecated */
 	r8192_wx_set_scan,        /* SIOCSIWSCAN */
 	r8192_wx_get_scan,        /* SIOCGIWSCAN */
@@ -923,17 +916,10 @@
 	r8192_wx_set_gen_ie,//NULL,			/* SIOCSIWGENIE */
 	NULL,			/* SIOCSIWGENIE */
 
-#if (WIRELESS_EXT >= 18)
 	r8192_wx_set_auth,//NULL,			/* SIOCSIWAUTH */
 	NULL,//r8192_wx_get_auth,//NULL,			/* SIOCSIWAUTH */
 	r8192_wx_set_enc_ext,			/* SIOCSIWENCODEEXT */
 	NULL,//r8192_wx_get_enc_ext,//NULL,			/* SIOCSIWENCODEEXT */
-#else
-	NULL,
-	NULL,
-	NULL,
-	NULL,
-#endif
 	NULL,			/* SIOCSIWPMKSA */
 	NULL,			 /*---hole---*/
 
@@ -977,7 +963,6 @@
 	r8192_wx_force_reset,
 };
 
-//#if WIRELESS_EXT >= 17
 struct iw_statistics *r8192_get_wireless_stats(struct net_device *dev)
 {
        struct r8192_priv *priv = ieee80211_priv(dev);
@@ -1006,7 +991,6 @@
 	wstats->qual.updated = IW_QUAL_ALL_UPDATED| IW_QUAL_DBM;
 	return wstats;
 }
-//#endif
 
 
 struct iw_handler_def  r8192_wx_handlers_def={
@@ -1015,8 +999,6 @@
 	.private = r8192_private_handler,
 	.num_private = ARRAY_SIZE(r8192_private_handler),
 	.num_private_args = sizeof(r8192_private_args) / sizeof(struct iw_priv_args),
-#if WIRELESS_EXT >= 17
 	.get_wireless_stats = r8192_get_wireless_stats,
-#endif
 	.private_args = (struct iw_priv_args *)r8192_private_args,
 };