all: remove dead code

follow-up to 4df45c8

These are not used anywhere

(cherry picked from commit 6152cf5)
Signed-off-by: Paul Donald <newtwen+github@gmail.com>
Link: openwrt#361
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

Author: systemcrash

src/config.c

@@ -72,8 +72,6 @@ struct sys_conf sys_conf = {
 #define PD_MIN_LEN_MAX		64
 #define PD_MIN_LEN_DEFAULT	62
 
-#define OAF_DHCPV6	(OAF_DHCPV6_NA | OAF_DHCPV6_PD)
-
 enum {
 	IPV6_PXE_URL,
 	IPV6_PXE_ARCH,

src/dhcpv6.h

@@ -87,11 +87,6 @@
 #define DHCPV6_STATUS_USEMULTICAST 5
 #define DHCPV6_STATUS_NOPREFIXAVAIL 6
 
-// I just remembered I have an old one lying around...
-#define DHCPV6_ENT_NO 30462
-#define DHCPV6_ENT_TYPE 1
-
-
 #define DHCPV6_HOP_COUNT_LIMIT 32
 
 #define DHCPV6_REC_TIMEOUT	2000 /* msec */