net: openvswitch: fix repeated words in comments

Delete the redundant word 'is'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/openvswitch/flow_netlink.c

@@ -3304,7 +3304,7 @@ static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr,
 
 			/* Disallow subsequent L2.5+ set actions and mpls_pop
 			 * actions once the last MPLS label in the packet is
-			 * is popped as there is no check here to ensure that
+			 * popped as there is no check here to ensure that
 			 * the new eth type is valid and thus set actions could
 			 * write off the end of the packet or otherwise corrupt
 			 * it.