ip: remove extra newlines at end-of-file

Shouldn't have extra blank lines.

ip/ipaddrlabel.c

@@ -263,4 +263,3 @@ int do_ipaddrlabel(int argc, char **argv)
 	fprintf(stderr, "Command \"%s\" is unknown, try \"ip addrlabel help\".\n", *argv);
 	exit(-1);
 }
-

ip/ipfou.c

@@ -156,4 +156,3 @@ int do_ipfou(int argc, char **argv)
 	fprintf(stderr, "Command \"%s\" is unknown, try \"ip fou help\".\n", *argv);
 	exit(-1);
 }
-

ip/iplink_bond_slave.c

@@ -113,4 +113,3 @@ struct link_util bond_slave_link_util = {
 	.parse_opt	= bond_slave_parse_opt,
 	.slave		= true,
 };
-

ip/ipprefix.c

@@ -107,4 +107,3 @@ int print_prefix(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
 
 	return 0;
 }
-

ip/iproute.c

@@ -1811,4 +1811,3 @@ int do_iproute(int argc, char **argv)
 	fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
 	exit(-1);
 }
-

ip/tcp_metrics.c

@@ -508,4 +508,3 @@ int do_tcp_metrics(int argc, char **argv)
 			"try \"ip tcp_metrics help\".\n", *argv);
 	exit(-1);
 }
-