rsi: fix a typo in a debug message

There is a \b (backspace) character in the message that wasn't intended.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
diff --git a/drivers/net/wireless/rsi/rsi_91x_mac80211.c b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
index 2c12f01..b4527e6 100644
--- a/drivers/net/wireless/rsi/rsi_91x_mac80211.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
@@ -286,7 +286,7 @@
 			common->bgscan_en = false;
 		info.aborted = false;
 		ieee80211_scan_completed(adapter->hw, &info);
-		rsi_dbg(INFO_ZONE, "Back ground scan cancelled\b\n");
+		rsi_dbg(INFO_ZONE, "Back ground scan cancelled\n");
 	}
 	common->hwscan = NULL;
 	mutex_unlock(&common->mutex);