tools: bpf: fix BTF code added twice to different trees

commit 38d5d3b3d5 ("bpf: Introduce BPF_ANNOTATE_KV_PAIR")

added to the bpf and net trees what

commit 92b57121ca ("bpf: btf: export btf types and name by offset from lib")

has already added to bpf-next/net-next, but in slightly different
location.  Remove the duplicates (to fix build of libbpf).

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/lib/bpf/btf.c

@@ -37,14 +37,6 @@ struct btf {
 	int fd;
 };
 
-static const char *btf_name_by_offset(const struct btf *btf, __u32 offset)
-{
-	if (offset < btf->hdr->str_len)
-		return &btf->strings[offset];
-	else
-		return NULL;
-}
-
 static int btf_add_type(struct btf *btf, struct btf_type *t)
 {
 	if (btf->types_size - btf->nr_types < 2) {
@@ -401,12 +393,3 @@ const char *btf__name_by_offset(const struct btf *btf, __u32 offset)
 	else
 		return NULL;
 }
-
-const struct btf_type *btf__type_by_id(const struct btf *btf,
-				       __u32 type_id)
-{
-	if (type_id > btf->nr_types)
-		return NULL;
-
-	return btf->types[type_id];
-}

tools/lib/bpf/btf.h

@@ -22,6 +22,5 @@ __s64 btf__resolve_size(const struct btf *btf, __u32 type_id);
 int btf__resolve_type(const struct btf *btf, __u32 type_id);
 int btf__fd(const struct btf *btf);
 const char *btf__name_by_offset(const struct btf *btf, __u32 offset);
-const struct btf_type *btf__type_by_id(const struct btf *btf, __u32 type_id);
 
 #endif