staging: rtl8192e: Remove constant variable peer_mimo_ps

MimoPwrSave is set to 3 and not changed. peer_mimo_ps is set to
MimoPwrSave and not changed. All evaluations of peer_mimo_ps with 0 will
have a constant result and can be removed.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/7b2ccccde769133db9365c693fdd0c42e9dc75f9.1702406712.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c

@@ -1753,10 +1753,7 @@ void rtl92e_update_ratr_table(struct net_device *dev)
 		ratr_value &= 0x00000FF7;
 		break;
 	case WIRELESS_MODE_N_24G:
-		if (ieee->ht_info->peer_mimo_ps == 0)
-			ratr_value &= 0x0007F007;
-		else
-			ratr_value &= 0x000FF007;
+		ratr_value &= 0x000FF007;
 		break;
 	default:
 		break;

drivers/staging/rtl8192e/rtl819x_HT.h

@@ -112,7 +112,6 @@ struct rt_hi_throughput {
 	u8 forced_mpdu_density;
 	u8 forced_short_gi;
 	u8 current_op_mode;
-	u8 peer_mimo_ps;
 	enum ht_extchnl_offset CurSTAExtChnlOffset;
 	u8 cur_tx_bw40mhz;
 	u8 sw_bw_in_progress;

drivers/staging/rtl8192e/rtl819x_HTProc.c

@@ -507,11 +507,7 @@ void HTOnAssocRsp(struct rtllib_device *ieee)
 
 	HTFilterMCSRate(ieee, pPeerHTCap->MCS, ieee->dot11ht_oper_rate_set);
 
-	ht_info->peer_mimo_ps = pPeerHTCap->MimoPwrSave;
-	if (ht_info->peer_mimo_ps == MIMO_PS_STATIC)
-		pMcsFilter = MCS_FILTER_1SS;
-	else
-		pMcsFilter = MCS_FILTER_ALL;
+	pMcsFilter = MCS_FILTER_ALL;
 	ieee->HTHighestOperaRate = HTGetHighestMCSRate(ieee,
 						       ieee->dot11ht_oper_rate_set,
 						       pMcsFilter);