pktgen: remove unused variable

pktgen_thread_worker() no longer needs wait variable, delete it.

Fixes: ef87979c ("pktgen: better scheduler friendliness")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/pktgen.c

@@ -3602,7 +3602,6 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev)
 
 static int pktgen_thread_worker(void *arg)
 {
-	DEFINE_WAIT(wait);
 	struct pktgen_thread *t = arg;
 	struct pktgen_dev *pkt_dev = NULL;
 	int cpu = t->cpu;