filter_kubernetes: fix coverity scan CID 161078 for code maintainability issue
@@ -802,7 +802,6 @@ static int merge_meta(struct flb_kube_meta *meta, struct flb_kube *ctx,
msgpack_unpacked_init(&meta_result);
for (i = 0; i < meta_val.via.map.size; i++) {
k = meta_val.via.map.ptr[i].key;
- v = meta_val.via.map.ptr[i].val;
char *ptr = (char *) k.via.str.ptr;
size_t size = k.via.str.size;
