net: remove NIP6(), NIP6_FMT, NIP6_SEQFMT and final users

Open code NIP6_FMT in the one call inside sscanf and one user
of NIP6() that could use %p6 in the netfilter code.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 9a6d0cf..eb640c1 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -214,7 +214,7 @@
 		addr.s6_addr32[2] = htonl(0xffff);
 		addr.s6_addr32[3] =
 			htonl((((((b1<<8)|b2)<<8)|b3)<<8)|b4);
-       } else if (sscanf(buf, NIP6_FMT "%c",
+       } else if (sscanf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x%c",
 			&b1, &b2, &b3, &b4, &b5, &b6, &b7, &b8, &c) == 8) {
 		addr.s6_addr16[0] = htons(b1);
 		addr.s6_addr16[1] = htons(b2);