netfilter: remove deprecation warnings from uapi headers.

There are two netfilter userspace headers which contain deprecation
warnings.  While these headers are not used within the kernel, they are
compiled stand-alone for header-testing.

Pablo informs me that userspace iptables still refer to these headers,
and the intention was to use xt_LOG.h instead and remove these, but
userspace was never updated.

Remove the warnings.

Fixes: 2a475c40 ("kbuild: remove all netfilter headers from header-test blacklist.")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

include/uapi/linux/netfilter_ipv4/ipt_LOG.h

@@ -2,8 +2,6 @@
 #ifndef _IPT_LOG_H
 #define _IPT_LOG_H
 
-#warning "Please update iptables, this file will be removed soon!"
-
 /* make sure not to change this without changing netfilter.h:NF_LOG_* (!) */
 #define IPT_LOG_TCPSEQ		0x01	/* Log TCP sequence numbers */
 #define IPT_LOG_TCPOPT		0x02	/* Log TCP options */

include/uapi/linux/netfilter_ipv6/ip6t_LOG.h

@@ -2,8 +2,6 @@
 #ifndef _IP6T_LOG_H
 #define _IP6T_LOG_H
 
-#warning "Please update iptables, this file will be removed soon!"
-
 /* make sure not to change this without changing netfilter.h:NF_LOG_* (!) */
 #define IP6T_LOG_TCPSEQ		0x01	/* Log TCP sequence numbers */
 #define IP6T_LOG_TCPOPT		0x02	/* Log TCP options */