brcmsmac: remove duplicated if condition

The nested 'li_mimo == &locale_bn' check is excessive and always
true. Thus it can be safely removed.
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/broadcom/brcm80211/brcmsmac/channel.c

@@ -495,14 +495,12 @@ brcms_c_channel_reg_limits(struct brcms_cm_info *wlc_cm, u16 chanspec,
 	 * These locales have SISO expressed in the
 	 * table and override CDD later
 	 */
-	if (li_mimo == &locale_bn) {
 	if (li_mimo == &locale_bn) {
 		maxpwr20 = QDB(16);
 		maxpwr40 = 0;
 
 		if (chan >= 3 && chan <= 11)
 			maxpwr40 = QDB(16);
-		}
 
 		for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
 			txpwr->mcs_20_siso[i] = (u8) maxpwr20;