drop_monitor: Avoid multiple blank lines

Remove multiple blank lines which are visually annoying and useless.

This suppresses the "Please don't use multiple blank lines" checkpatch
messages.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/drop_monitor.c

@@ -300,7 +300,6 @@ static int set_all_monitor_traces(int state)
 	return rc;
 }
 
-
 static int net_dm_cmd_config(struct sk_buff *skb,
 			struct genl_info *info)
 {
@@ -427,7 +426,6 @@ static int __init init_net_drop_monitor(void)
 		reset_per_cpu_data(data);
 	}
 
-
 	goto out;
 
 out_unreg: