drop_monitor: remove unnecessary break after return

Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/drop_monitor.c

@@ -289,10 +289,8 @@ static int net_dm_cmd_trace(struct sk_buff *skb,
 	switch (info->genlhdr->cmd) {
 	case NET_DM_CMD_START:
 		return set_all_monitor_traces(TRACE_ON);
-		break;
 	case NET_DM_CMD_STOP:
 		return set_all_monitor_traces(TRACE_OFF);
-		break;
 	}
 
 	return -ENOTSUPP;