staging: rtl8187se: remove an unnecessary line continuation

This patch fixed the following checkpatch warning:
WARNING: Avoid unnecessary line continuations
Signed-off-by: Teodora Baluta <teobaluta@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8187se/ieee80211/ieee80211_tx.c

@@ -294,7 +294,7 @@ ieee80211_classify(struct sk_buff *skb, struct ieee80211_network *network)
 	}
 
 	if (eh->ether_type == __constant_htons(ETHERTYPE_IP)) {
-		const struct iphdr *ih = (struct iphdr *)(skb->data + \
+		const struct iphdr *ih = (struct iphdr *)(skb->data +
 		    sizeof(struct ether_header));
 		wme_UP = (ih->tos >> 5)&0x07;
 	} else if (vlan_tx_tag_present(skb)) {/* vtag packet */